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Douglassia antillensis Fallon, 2016, new species
No full text<i>Douglassia antillensis</i>, new species <p>(Plate 58)</p> <p> <i>Cerodrillia thea</i> auct. non (Dall, 1884), is a misidentification by Pointier & Lamy (1998: 159, text photos [Guadeloupe specimen]) and by Massemin <i>et al.</i> (2009: 204, right text photo [Martinique specimen]).</p> <p> <i>Cerodrillia</i> auct. non <i>perryae</i> (Bartsch & Rehder, 1939): Williams (2005; 2009: species 1524, second photo from right only); Jong & Coomans (1988: 112 [Not pictured but may be this species on the basis of their description.]).</p> <p> <i>Cerodrillia</i> aff. <i>perryi</i> [sic] Bartsch & Rehder, 1939: Altena (1975: 62, pl. 7, figs. 3, 4, [off Suriname]) may be this species.</p> <p> <i>Cerodrillia</i> aff. <i>perryae</i> Bartsch & Rehder, 1939: Rios (1975: 132, pl. 40, fig. 593, [off Amapá, Brazil]) may be this species.</p> <p> <b>Type material.</b> Holotype 12.1 x 5.1 mm (USNM 1291338); 19 paratypes, all from the type locality: 3 spec., 11.8 x 5.0, 11.4 x 5.1 & 11.2 x 4.6 mm (ANSP 464988); 3 spec., 11.4 x 4.7, 10.5 x 4.7 & 9.9 x 4.4 mm (USNM 129339); 3 spec., 11.5 x 4.9, 12.7 x 5.3 & 11.4 x 4.9 mm (UF 496637); 3 spec., 11.8 x 5.0, 11.4 x 4.9 & 11.4 x 5.0 mm (MZSP 122064); 3 spec., 11.2 x 4.7 & 12.1 x 4.9 & 11.6 x 4.8 mm (MNRJ 34636); 3 spec., 12.0 x 5.0, 12.3 x 5.2 & 12.1 x 4.9 (BMSM 14988); 1 spec. 11.5 x 4.8 mm (P. Stahlschmidt coll.). All G. Mackintosh! 17, 22 May 1998.</p> <p> <b>Type locality.</b> Dragon’s Bay, Grenada, in 24– 26 m.</p> <p> <b>Other material examined.</b> An additional 188 specimens were examined: <i>E Florida:</i> 1 spec., 17.7 x 7.0 mm, off Bath & Tennis Club, Palm Beach, Palm Beach Co., McGinty! 22 May 1951 (UF 228880); 1 spec., 16.1 x 6.9 mm, in 55 m, off Palm Beach, Palm Beach Co, McGinty! 14 Mar 1950 (UF 155623). <i>Bahama Is:</i> 1 spec. 10.3 x 4.5 mm, in 27 m, Gold Rock, Grand Bahama I. (USNM 900127); 1 spec., 9.8 x 4.2 mm, Tamarind, Grand Bahama I. (26°30'45''N, 078°36'00''W) J. Worsfold! (ANSP 368904); 5 spec., 4.8 x 2.3, 5.7 x 2.9, 6.7 x 3.3, 7.0 x 3.6 & 9.5 x 4.5 mm, Grand Bahama I., 26°31'00''N, 078°46'30''W, J Worsfold! (ANSP 374454); 1 spec., 8.7 x 4.3 mm, Indian Cay, Grand Bahama I., 26°43'N, 079°01'W, J. Worsfold! (ANSP 355578); 1 spec., 12.7 x 5.4 mm, Indian Cay, Grand Bahama I., 26°42'45”N, 078°39'15”W, J. Worsfold! (ANSP 366924); 2 spec., 12.7 x 5.7 & 12.7 x 5.5 mm, in 20–21 m, off Cape Eleuthera, Eleuthera I., P. Fallon! 11 Aug 1999 (author’s coll.); 2 spec., 13.6 x 6.1 & 14.7 x 6.0 mm, in 18 m, 2.4 km S of Cape Eleuthera Harbor, Eleuthera I., R. Masino! 5 Jun 2002 (author’s coll.). <i>Turks & Caicos Is:</i> 1 spec., 14.7 x 5.8 mm, in 14 m, off West Caicos I. (USNM 900125); 1 spec., 15.8 x 6.2 mm, in 14 m, off West Caicos I. (UF 355565); 2 spec., 12.7 x 5.4 (proto missing) & 12.8 x 5.4 mm, in 14 m, Turks I., W. Harland! Jun 1989 (UF 470274). <i>Cuba.</i> 2 spec., 13.8 x 5.8 & 12.3 x 5.0 mm, in 18 m, Chorrera Sands, Havana, J. Finlay! (UF 156037). <i>Dominican Republic:</i> 1 spec., 14.1 x 6.5 mm, Las Salinas (USNM 900128). <i>Puerto Rico:</i> 4 spec., 15.0 x 5.9, 13.2 x 5.5, 13.2 x 5.7 & 11.8 x 5.0 mm, in 30 m, Tourmaline Reef, Mayaguez, G. Mackintosh! (author’s coll.). <i>Honduras:</i> 2 spec., 13.6 x 5.9 mm (author’s coll.) & 12.2 x 4.7 mm (USNM 900132), in 12 m, Vivorillo Cays, Bay Is., G. Mackintosh! 12 Aug 1992. <i>Antigua:</i> 2 spec., 14.5 x 6.1 & 13.9 x 5.8 mm, in 9 m, Pelican Bay, Barbuda I. (USNM 900123). <i>Guadeloupe:</i> 1 spec., 10.7 x 4.6 mm, in 15 m, Vieux-Fort (USNM 900124); 1 spec., 11.3 x 5.0 mm, in 14 m, Deshaies, G. Duffy! 12 Oct 1982 (UF 470273); 77 spec., 2.8–14.0 mm (avge. = 6.22 mm), in 5–60 m, at 31 KARUBENTHOS stations, May 2012 (cataloged between MNHN IM-2012-28027 and -28063), and in addition, the following 5 live-taken spec., tabularized below, listing barcode accession numbers for sequenced specimens (others preserved in alcohol):</p> <p> <i>Martinique:</i> 4 spec., 9.6 x 4.4, 10.0 x 4.4, 10.6 x 4.8 & 12.3 x 5.1 mm, in 14–18 m, Grande Anse d'Arlet, G. Mackintosh! 13–14 May, 2002 (author’s coll.); 2 spec., 11.1 x 5.3 & 9.0 x 4.1 mm, in 5 m, Anse d’Arlet (MNHN ex J. Colomb coll.); 2 spec.; 9.8 x 4.0 & 10.3 x 4.5 mm, Pointe Baleine (MNHN ex J. Colomb coll.); 1 spec., 10.7 x 4.6 mm, in 9 m, Ramiers I., G. Mackintosh! 26 Jun 1996 (author’s coll.); 2 spec. <i>St. Vincent & the Grenadines:</i> 1 spec., 12.5 x 5.0 mm, in 14 m, Petit Nevis I., (USNM 900131); 1 spec., 12.7 x 5.6 mm, in 12 m, Petit Nevis I., G.</p> <p> Mackintosh! 13 May 1993 (author’s coll.); 5 spec., 12.2 x 5.0, 11.9 x 4.7, 12.1 x 5.2, 13.2 x 5.7 & 13.0 x 5.5 mm, in 9 m, N Point, Chatham Bay, Union I., SVG, G. Mackintosh! 16 Apr 2007; 2 spec., 10.7 x 4.4 & 10.8 x 4.6, in 32 m, SW Point, Union I., G. Mackintosh! 13 Apr 2007 (author’s coll.); 2 spec., 13.7 x 5.8 & 11.1 x 4.8 mm, in 21 m, Chatham Bay, Union I., R. Masino! (author’s coll.). <i>Grenada:</i> 11 spec., 13.4 x 5.4, 10.8 x 4.4, 10.9 x 4.6, 10.3 x 4.3, 9.4 x 4.2, 11.1 x 4.7, 11.2 x 5.0, 11.1 x 4.8, 12.8 x 5.4, 12.2 x 5.3 & 12.4 x 5.1 mm, in 12–14 m, N end of Flamingo Bay, G. Mackintosh! 15 Apr 2004 (author’s coll.); 1 spec., 11.6 x 4.8 mm, in 20 m, Flamingo Bay, G. Mackintosh!, 7 Apr 2004 (author’s coll.); 4 spec., 12.1 x 4.9, 11.5 x 5.0, 12.1 x 5.0 & 10.8 x 4.6 mm, in 12 m, Flamand Bay (author’s coll.); 5 spec., 12.7 x 5.7, 11.5 x 4.9, 10.9 x 4.9, 11.8 x 4.9 & 9.6 x 4.1 mm, in 7 m, S side Moliniere Pt., G. Mackintosh! 25 Jan 2007 (author’s coll.); 2 spec., 10.6 x 4.5 & 10.6 x 4.6 mm, in 18 m, Hillsborough Bay, Carriacou I., G. Mackintosh! 15 May 2005 (author’s coll.); 5 spec., 16.0 x 6.8, 12.5 x 5.3, 14.0 x 5.8, 13.6 x 5.3, 13.1 x 5.4 & 11.5 x 5.1 mm, in 8 m, Hillsborough Bay, Carriacou I., G. Mackintosh! 14 May 2005 (author’s coll.); 1 spec., 11.5 x 5.1 mm, in 9 m, NW coast of Carriacou I., G. Mackintosh! 19 Dec 2006 (author’s coll.); 1 spec., 14.6 x 5.7 mm, in 15 m, Ronde I., G. Mackintosh! 17 Jun 1998 (author’s coll.); 1 spec., 13.6 x 5.6 mm, in 7 m, Ronde I., G. Mackintosh! 7 May 2005 (UF 470275); 1 spec., 14.0 x 5.8 mm, in 11 m, Saline I., G. Mackintosh! 1 Feb 1997 (author’s coll.). <i>Barbados:</i> 1 spec., 9.5 x 4.2 mm, in 139 m, offshore, Blake expedition (MCZ 7072); 1 spec., 16.0 x 6.9 mm, in 183 m, off St. James, F. Sander! 1978. (UF 470276); 2 spec., 11.5 x 5.2 & 11.5 x 4.9 mm, in ca. 180 m, off Holetown, St. James Par., 13°10'52''N, 059°38'30''W, F. Sander! Oct 1978 (ANSP 353510). <i>Netherlands Antilles:</i> 1 spec., 10.9 x 4.9 mm, from old bottle at 130–168 m, Sta. 1 off Sea Aquarium, SW Curaçao, 12°04.87'N, 68°53.75'W, M. Harasewych! aboard <i>Curasub</i>, 23 May 2012 (USNM 1199822 [to be split from <i>D.enae</i>]); 1 spec., 10.7 x 4.9 mm, in 244–274 m, Sta. 13-04 off Sea Aquarium, Bapor Kibra, Willemstad, Curaçao, C. Baldwin! aboard <i>Curasub</i>, Feb 2013 (USNM 1231396). <i>Trinidad & Tobago:</i> 2 spec., 12.9 x 5.3 & 10.2 x 4.4 mm, in 24 m, 0.4 km off Lambeau Beach, Tobago I., R. Masino! (author’s coll.); 3 spec., 14.9 x 6.1, 12.8 x 5.3 & 11.4 x 4.9 mm, in 21 m, 0.4 km ENE of beach, Speyside, Tobago I., R. Masino! (author’s coll.); 1 spec., 11.5 x 4.7 mm, in 17 m, Store Bay, Tobago I., P. Fallon! 11 Nov 1999 (author’s coll.); 1 spec., 12.5 x 5.4 mm, in 30 m, Store Bay, Tobago I., G. Mackintosh! 20 Oct 1997 (author’s coll.). <i>Venezuela:</i> 1 spec., 15.0 x 6.5 mm, in 12 m, Tortuga I., G. Mackintosh! 27 Sep 1993 (author’s coll.); 1 spec. 12.8 x 5.3 mm, in 12 m, Tortuga I. (USNM 900129). <i>French Guiana:</i> 3 spec., 15.1 x 5.6, 2.4 x 1.4 & 2.7 x 1.5 mm, in 57 m, GUYANE 2014 Sta. CP4408, 05°36.3'N, 52°09.2'W, 10 Aug 2014 (MNHN not cataloged); 4 spec., 3.3 x 1.6, 3.8 x 2.0, 4.8 x 2.3 & 5.0 x 2.5 mm, in 102–103 m, GUYANE 2014 Sta. CP4390, 05°49'N, 51°28'W, 6 Aug 2014 (MNHN not cataloged); 1 spec., 11.6 x 4.8 mm, in 83–85 m, GUYANE 2014 Sta. CP4383, 06°25.6' N, 52°25.3'W, 4 Aug 2014 (MNHN IM-2012- 43469); 1 spec., 5.6 x 2.6 mm, in 95 m, GUYANE 2014 Sta. DW4359, 06°52.2'N, 53°02.6'W, 30 Jul 2014 (MNHN not cataloged); 4 spec., 2.3 x 1.2, 3.5 x 1.9, 4.2 x 2.0 & 4.7 x 2.2 mm, in 95–97 m, GUYANE 2014 Sta. CP4402, 06°18'N, 52°13.3'W, 8 Aug 2014 (MNHN not cataloged).</p> <p> <b>Range and habitat.</b> E Florida (off Palm Beach Co.); Bahama Is. (Grand Bahama I.; Eleuthera I.); Turks & Caicos Is.; Dominican Republic; Puerto Rico; Honduras (Vivorillo Cays); Antigua; Guadeloupe; Martinique; St. Vincent & the Grenadines; Granada; Barbados; Trinidad & Tobago (Tobago I.); Venezuela (Tortuga I.); Netherlands Antilles (Curaçao I.); and French Guiana. Specimens reported as <i>Cerodrillia perryae</i> in Jong & Coomans (1988: 112) are believed to be this species on the basis of a photograph of a specimen from Curaçao I. provided by M. Faber (pers. comm. 22 Apr 2011). <i>Douglassia antillensis</i> is associated with coral reefs and has been reported from 7–32 m depths on carbonate sand or carbonate sand and coral rubble in reef swales or pockets. Only dead-collected specimens occur at greater depths from off Palm Beach Co. (55 m), from off Barbados (128– 183 m), off Curaçao (244–274 m), and off French Guiana (57–103 m), perhaps transported there from shallower depths by currents.</p> <p> <b> Description. <i>Shell</i></b> small (to 17.7 mm), stoutly fusiform, glossy, truncated anteriorly, whorls up to 11, but more commonly around 9; last whorl approximately 63% of total length; whorls convex with bulging ribs; shell apex acutely pointed. <i>Protoconch</i> conical, of approximately 2½–2¾ glassy, smooth whorls, the exact number difficult to determine because the tip of the first is partially immersed in the second; color golden brown. <i>Axial sculpture</i> of prominent convex ribs, obsolete or absent in sulcus, most prominent and widest on whorl periphery a little below mid-whorl, and evanescent on the shell base below periphery. Rib crests round at whorl periphery but ridged in the sulcal region where ribs are narrower and slightly hooked to the left reflecting outline of anal sinus. Ribs number 8–9 on penultimate and 5–7 on the body whorl to the varix. Axial growth striae present on shell surface, curved in the region of the anal sulcus. <i>Varix</i> located just behind the anal sinus and resembles a cup handle when viewed ventrally. <i>Anal sinus</i> on shoulder adjacent to suture, deep, U-shaped, offset from the shell axis by parietal callus; edge of inner lip of sinus flared. <i>Spiral sculpture</i> of fine threads or ridges, barely visible below the periphery of last whorl, becoming stronger anteriorly on base and anterior fasciole. <i>Outer lip</i> thin, projecting out from the varix; with an irregular axial fold or thin axial rib; edge flexed out at anal sinus, waved below; with a shallow stromboid notch. <i>Inner lip</i> wide, margined, thick anteriorly, thinner on parietal wall, with a thick callus that forms one side of the anal sinus. Lip and callus edge raised by visible layers of successive deposition, especially in more mature specimens. <i>Anterior canal</i> short, open, unnotched, slightly curved to the right viewed ventrally, canal tip with a slightly flared marginal lip. Anterior fasciole not swollen; with about 6 faint spiral ridges. <i>Color</i> shell base dingy white, with a light to dark golden brown band just below body whorl periphery, visible as a narrow band at spire sutures; rib crests dingy white; band’s posterior edge fades to the shell’s base color; the anterior edge is more distinct.</p> <p> <b> Remarks. <i>Taxonomy</i>.</b> <i>Douglassia antillensis</i> has all the key characteristics of the genus: a concave sulcus with obsolete or absent ribs, a 2½- to 2¾-whorl protoconch, spiral microsculpture confined to the base, and a cuphandle-like varix positioned immediately behind the anal sinus. It is the commonest <i>Douglassia</i> in the Antilles, often misidentified as <i>Cerodrillia perryae</i> (Bartsch & Rehder, 1939) in museum collections. Many of the published reports of <i>C. perryae</i> from outside of Florida are also likely this species but cannot be confirmed without accompanying photographs. A list of reports of <i>C. perryae</i> that are likely this species is given in the synonymy list under that species. <b> <i>Variability</i>.</b> The average total length of 210 measured specimens is 9.72 mm (2.8–17.7 mm); the average W/ L ratio of 0.449. Given its relatively wide dispersal, it is fairly uniform in its morphology and color pattern, although there are some regional differences in color—those from the northern limit of its distribution, e. g. Grand Bahama I., appear to be lighter in color, and those from the southern limit (French Guiana) a mostly solid orange-brown color with white rib crests. Specimens are shown from various localities in Plate 58. <i> <i>Identification.</i> Douglassia antillensis</i> most closely resembles <i>D. enae</i> Bartsch, 1934 but differs principally in possessing less angular shoulders, most conspicuously on the last whorl. It also differs in coloration; the central band in <i>D. antillensis</i> tends to be less distinct on its adapical (posterior) margin, and its protoconch is dark, similar to the color of the band. <i>Douglassia enae</i> has a more distinct adapical margin on its central band, and a light colored protoconch. Although their ranges overlap, <i>D. antillensis</i> is reported from shallower water. <i>Douglassia antillensis</i> is often misidentified as <i>C. perryae</i> but is stouter, has 2½–2¾ protoconch whorls, not 1¾–2, and a slightly different color pattern. Because it is stouter, its W/ L ratio is greater (Average W/L = 0.449 for 210 specimens of <i>D. antillensis</i> versus 0.392 for the 17 specimens of <i>C. perryae</i>). The color pattern of <i>D. antillensis</i> is consistent among specimens, even across its much larger range than <i>C. perryae</i>. The latter varies in pattern; i.e., the central band is more variable in width, or even absent. <i>Douglassia antillensis</i> differs from <i>D. moratensis</i>, new species in having less convex body whorl, less prominent ribs on the shoulder, and a different color pattern. <i>Douglassia antillensis</i> has also been confused with <i>C. thea</i> (Dall, 1884), but that species’ spire is taller, color a uniform brown, and ribs shorter and more oblique.</p> <p> <b>Etymology.</b> The Antillean <i>Douglassia</i>. Although not strictly confined to the Antilles, <i>D. antillensis</i> appears to be quite common and widespread in this region, especially in the Windward Is.</p>Published as part of <i>Fallon, Phillip J., 2016, Taxonomic review of tropical western Atlantic shallow water Drilliidae (Mollusca: Gastropoda: Conoidea) including descriptions of 100 new species, pp. 1-363 in Zootaxa 4090 (1)</i> on pages 130-133, DOI: 10.11646/zootaxa.4090.1.1, <a href="http://zenodo.org/record/263299">http://zenodo.org/record/263299</a>
Splendrillia bahamasensis Fallon, 2016, new species
No full text<i>Splendrillia bahamasensis</i>, new species <p>(Plates 144, 145)</p> <p> <b>Type material.</b> Holotype 16.2 x 6.2 mm (USNM 1291354); 24 paratypes, all from the type locality: 12 spec., 20.4 x 7.8, 16.1 x 6.2, 11.7 x 5.3 & 12.6 x 5.0 mm (USNM 1291355), 14.2 x 5.6, 16.6 x 6.5, 14.0 x 6.0 & 15.1 x 6.0 mm (ANSP 464994), 15.6 x 6.2, 14.2 x 5.6, 14.4 x 5.7 & 15.9 x 6.3 mm (UF 496645), NW side of N Elbow Cay; 2 spec., 15.6 x 5.9 mm (BMSM 14994) & 15.5 x 6.1 mm (BMSM 14992), NW side of N Elbow Cay; 3 spec., 12.3 x 4.9 & 12.5 x 4.9 mm (BMSM 14993) & 14.9 x 5.6 mm (BMSM 14995), NW side of Elbow Cays; 7 spec., 6.9 x 3.2, 7.6 x 3.4 & 7.8 x 3.4 mm (DMNH 240358), 9.8 x 4.1, 12.0 x 5.0, 12.0 x 5.2 & 14.8 x 5.7 mm (MZSP 122071), NW side of Elbow Cay. All types G. Mackintosh! Jan–Feb 1996.</p> <p> <b>Type locality.</b> Elbow Cays, Cay Sal Bank, Bahama Is., at 9– 12 m.</p> <p> <b>Other material examined.</b> An additional 84 specimens were examined, all from the Bahama Is.: <i>Grand Bahama I.:</i> 1 spec., 8.6 x 4.4 mm, in 3.7–5 m, S end, Wood Cay, P. Fallon!, 13 Jul 2000 (author’s coll.); 1 spec., 10.5 x 4.6 mm, off E side of Freeport Harbor inlet, 26°31'00"N, 078°46'30"W, Worsfold! (ANSP 374479); 7 spec., 2 largest: 11.5 x 4.3 & 11.9 x 5.1 mm, on algae covered rocks Freeport Dist., West End, 26°41'N, 078°58'W, J. Worsfold!, 1981 (ANSP 355569); 1 spec., 6.6 x 2.9 mm, in beach drift, West End, Bob Quigley! 1985 (H.G. Lee coll.); 8 spec., 6 largest: 11.8 x 5.1, 12.0 x 4.6, 9.4 x 3.6, 8.5 x 3.2, 9.4 x 4.0 & 14.2 x 5.3 mm, in 0–0.3 m, Settlement Pt., 26°42'15"N, 078°59'50"W, J. Worsfold! (ANSP 368585); 1 spec., 9.4 x 4.0 mm, in 24 m, Indian Cay, 26°42'45"N, 078°39'15"W, J. Worsfold! (ANSP 366925); 14 very young specimens, 2 measured: 7.0 x 3.0 & 8.5 x 3.5 mm, in 24 m, Gold Rock, 26°30'00''N, 078°22'00''W, J. Worsfold! (ANSP 369705); 5 spec., 4.3 x 2.5, 7.5 x 3.2, 8.1 x 3.5, 8.5 x 3.8 & 9.1 x 4.0 mm, in 24 m, Gold Rock, 20 mi E of Freeport, 26°35'N, 078°22'W, J. Worsfold! 1981 (ANSP 355563); 5 spec., 6.4 x 2.6, 9.4 x 4.0, 3.8 x 2.9, 8.7 x 3.7, & 4.3 mm, in 18–38 m, Lucaya, 26°29'45"N, 078°37'15"W, Worsfold! (ANSP 368081, 368082). <i>Bimini Is.:</i> 1 spec., 12.8 x 4.8 mm, in 1.8 m, Honeymoon Cove, Gun Cay, G. Mackintosh! 26 Feb 1996 (author’s coll.); 2 spec., 13.1 x 5.4 (author’s coll.) & 12.8 x 4.9 (USNM 900130) mm, in 4 m, Honeymoon Cove, Gun Cay, G. Mackintosh! 7 Apr 1994; 7 spec., 6 measured: 14.4 x 5.4, 13.9 x 5.4, 13.0 x 5.0, 10.1 x 4.1, 11.8 x 4.9 & 11.4 x 4.3 mm, Gun Cay, Bimini Is., McGinty! 21 May 1947 (UF 155958). <i>Berry Is.:</i> 1 spec., 10.0 x 4.2 mm, in 0.9 m, Hoffmans Cay, Pat Bingham! 20 Jun 1998 (H.G. Lee coll.). <i>Exuma Cays:</i> 4 spec., 10.4 x 4.6, 10.2 x 3.9, 11.3 x 4.5 & 11.6 x 5.0 mm, Ship Channel Cay, H. Dodge! (USNM 598737). <i>Cay Sal Bank:</i> 2 spec. 11.7 x 4.9 and 14.6 x 6.2 mm, in 9.8–11 m, E side of Dog Rocks, G. Mackintosh!, 15, 22 Feb 1996 (author’s coll.); 17 spec., 11.8 x 5.1, 12.9 x 5.3, 13.7 x 5.6, 13.5 x 5.5, 12.8 x 5.4, 13.5 x 5.4, 14.4 x 5.6, 14.4 x 5.7, 15.1 x 5.8, 14.8 x 6.0, 15.7 x 5.8, 15.5 x 6.1, 15.6 x 6.4, 16.4 x 6.4, 16.5 x 6.3, 16.2 x 6.2 & 13.7 x 5.5 mm, in 10 m, W side of Dog Rocks, G. Mackintosh! 24 Feb 1996 (author’s coll.); 1 spec., 11.5 x 4.5 mm, in 11 m, Cay Sal, G. Mackintosh!, 21 Apr 1994 (author’s coll.); 6 spec., 9.5 x 4.4, 10.2 x 5.5, 14.5 x 5.9 (all decollate) & 16.6 x 6.6 (author’s coll.), 9.2 x 4.2 & 9.2 x 4.3 (USNM 900111) mm, in 9 m, NW side of Elbow Cay, G. Mackintosh! 11 Jan 1966.</p> <p> <b>Range and habitat.</b> Bahama Is. (Grand Bahama I.; Bimini Is.; Berry Is.; Exuma Cays, and Cay Sal Bank). Reported from shallow sandy bottoms and on hard surfaces in approximately 2– 24 m.</p> <p> <b> Description. <i>Shell</i></b> small (to 20.4 mm); fusiform, truncated anteriorly; glossy, whorls appressed, with sloping shoulders, convex below; body whorl large compared to the spire, 62.0% of total length. <i>Protoconch</i> paucispiral, of approximately 2 smooth round whorls, the tip of the first partially submerged; the second larger than the first. <i>Axial sculpture</i> of broad low ribs, crests of most ribs rounded anteriorly, becoming narrower near the sulcus then terminating at sulcus; evanesce on shell base. Ribs slightly oblique on early whorls, but progressively less so to body whorl; absent between the varix and edge of outer lip; about as wide as their interspaces. Ribs 8 on penultimate (6–10), 6 to varix on body whorl (4–8 on specimens with a varix). Heavy, compact growth striae cover shell surface. <i>Spiral sculpture</i> of microscopic spiral lines overall, mostly obscured by dense striae; with weak spiral ridges on the anterior fasciole. <i>Sulcus</i> broad, slightly concave, about ¼ spire whorl height, with trace swellings of reduced ribs. <i>Varix</i> broader and higher than preceding ribs, positioned about ⅓-turn from the edge of the outer lip. <i>Outer lip</i> smooth, thick, juts out somewhat and flexed inward at its edge; a slight indentation present anteriorly suggests a stromboid notch. <i>Anal sinus</i> moderately deep in mature individuals, adjoins suture near back of sinus, behind parietal callus. <i>Inner lip</i> very thin, not margined, except in old shells; erect anteriorly near tip of canal, thin on parietal wall, ends in a low callus at suture line. <i>Anterior canal</i> short but distinct, open, notched. <i>Columella</i> slightly twisted to the left anteriorly viewed ventrally; anterior fasciole slightly swollen. <i>Color</i> white with light pink to rose-colored bands mid-whorl and anteriorly; dark rose-colored streaks between ribs, and on apertural side of varix. Other forms are patterned similarly with brownish orange, or a combination of brownishorange and rose; all white forms also occur.</p> <p> <b> Remarks. <i>Taxonomy</i>.</b> <i>Splendrillia bahamasensis</i> has all the important characteristics of <i>Splendrillia</i>: a smooth sulcus, axial ribs that terminate at the sulcus, a hump-like varix located about ⅓-turn from the edge of the outer lip, and an anal sinus that adjoins the suture at its rear. It is unique among <i>Splendrillia</i> in possessing heavy growth striae. <b> <i>Variability</i>.</b> The average length of 85 specimens is 12.24 mm (3.8–20.4 mm); the average W/ L ratio of 54 measured specimens is 0.413. Although color varies, no geographic pattern in the occurrence of pink or brownish orange forms could be discerned. All-white (dingy white) forms are rare. <i> <i>Identification.</i> Splendrillia bahamasensis</i> is commonly misidentified as <i>S. coccinata</i> (Reeve, 1845) by collectors and in museum collections; perhaps hampered by the absence of a published photograph of a <i>S. coccinata</i> type. Authors including the Bahama Is. in the range of <i>S. coccinata</i> have probably misidentified this species; the occurrence of verified specimens of <i>S. coccinata</i> is limited to the lower Lesser Antilles (see description of <i>S. coccinata</i>). <i>Splendrillia bahamasensis</i> is most easily distinguished from its congeners by its heavy growth striae. It also differs from <i>S. coccinata</i> by its larger maximum total length (20.4 versus 10.0 mm), straighter and fewer ribs. <i>Splendrillia bahamasensis</i> is also larger than <i>S. interpunctata</i> (largest 20.4 versus 16.5 mm). The ribs of <i>S. interpunctata</i> are narrower, more oblique, and sharper at their crests. While growth striae are noticeably present in <i>S. interpunctata</i>, they are not as dense so the shell still appears translucent, which is not the case for <i>S. bahamasensis</i>.</p> <p> <b>Etymology.</b> The Bahamas <i>Splendrillia</i>. Named for the country of the type locality and where all specimens reported here have been found.</p>Published as part of <i>Fallon, Phillip J., 2016, Taxonomic review of tropical western Atlantic shallow water Drilliidae (Mollusca: Gastropoda: Conoidea) including descriptions of 100 new species, pp. 1-363 in Zootaxa 4090 (1)</i> on pages 283-287, DOI: 10.11646/zootaxa.4090.1.1, <a href="http://zenodo.org/record/263299">http://zenodo.org/record/263299</a>
Where Truth Lies
No full text"This boldly original book traces the evolution of documentary film and photography as they migrated onto digital platforms during the first decades of the twenty-first century. Kris Fallon examines the emergence of several key media forms—social networking and crowdsourcing, video games and virtual environments, big data and data visualization—and demonstrates the formative influence of political conflict and the documentary film tradition on their evolution and cultural integration. Focusing on particular moments of political rupture, Fallon argues that ideological rifts inspired the adoption and adaptation of newly available technologies to encourage social mobilization and political action, a function performed for much of the previous century by independent documentary film. Positioning documentary film and digital media side by side in the political sphere, Fallon asserts that “truth” now lies in a new set of media forms and discursive practices that implicitly shape the documentation of everything from widespread cultural spectacles like wars and presidential elections to more invisible or isolated phenomena like the Abu Ghraib torture scandal or the “fake news” debates of 2016.
“Looking at a unique and intriguing set of ‘hybrid media,’ Fallon convincingly makes a claim about a change in the form of new media, one linking politics, aesthetics, and technology.” ALEXANDRA JUHASZ, Brooklyn College, CUNY
“Where Truth Lies does the difficult and much-needed work of unpacking how the documentary impulse is shifting in the digital age, both through the profound influence of digital aesthetics and computational thinking and through the ways traditional documentary is infusing digital expression.” JENNIFER MALKOWSKI, author of Dying in Full Detail: Mortality and Digital Documentary
KRIS FALLON is Assistant Professor of Cinema and Digital Media at the University of California, Davis.
The geochemistry of groundwater and sediments governing tungsten concentration in the basin-fill aquifers, Fallon, Nevada
No full textThe wide range of tungsten (W) concentrations (&sim0.7-700 ppb) in the groundwater of Fallon, Nevada, initiated an investigation to understand the geochemical cycle of W in the basin-fill aquifer. Tungsten in the groundwater became a potential health concern due to its observed concentrations in the human population of Fallon; the potential sources of W from nearby W ore deposits, mines, processing plants, and geothermal waters; and a possible cluster of childhood leukemia cases that was documented in the area. Spatial variation, concentration, and the mineralogical phase association(s) of W in sediments of the basin-fill alluvial aquifer near Fallon, NV, were identified in this study. These sediment characteristics were then compared to groundwater concentrations of W in an attempt to understand the geochemical controls on W in the aquifer environment. It was hypothesized that Eh levels control the distribution of W between solid and aqueous phases. Key findings of this study are: 1) concentration of W in bulk sediments ranged from 1.3&mdash7.9 mg/kg, and is a function of grain size and sediment chemistry, 2) no W minerals were observed in the aquifer sediments, 3) approximately 90% of the W partitioned into three sediment phases: non-crystalline iron (Fe) oxides, crystalline Fe oxides, (collectively referred to as FeOx) and organic matter (OM), 4) the association of W with FeOx and OM was unique compared to other trace elements (Mo, Cr, As, U, and Co) that predominately associated with the sulfide mineral fraction in the aquifer sediments, and 5) solid phase W concentrations correlate with dissolved W (R2 = 0.94), where groundwater with W concentrations >50 &mug/l had high alkalinity (>200 mg/l), reducing conditions (-0.7e4 mg/kg. Model results suggest dissolved As and P competed with dissolved W for adsorption sites on the Fe oxide surface, resulting in less W adsorption than expected. One conclusion of this work is that dissolved W was greatest in wells with the lowest pe levels. However, Fe oxides were observed in all environments, suggesting that adsorption between W and the Fe oxide surface occurs in all environments, and provides a control on dissolved W concentration
Fenimorea mackintoshi Fallon, 2016, new species
No full text<i>Fenimorea mackintoshi</i>, new species <p>(Plate 85)</p> <p> <b>Types.</b> Holotype 13.0 x 4.6 mm, G. Mackintosh!, 15 Mar 1996 (USNM 1291349); 15 paratypes: 1 spec., 12.5 x 4.6 mm, from type locality, G. Mackintosh!, 15 Mar 1996 (USNM 1291350); 13 spec: 13.7 x 5.1, 12.8 x 4.7, 13.9 x 5.1, 13.2 x 5.0 & 13.7 x 5.0 mm (ANSP 464990), 12.5 x 5.0, 13.4 x 4.8, 12.6 x 4.6, 13.4 x 5.2 mm (UF 496642), 12.3 x 4.6, 12.3 x 4.5, 12.3 x 4.4 & 15.3 x 5.5 mm (author’s coll.), in 6.4 m, S end of Highborne Cay, Exuma, Bahama Is., G. Mackintosh!, 17 Mar 1996; 1 spec., 14.9 x 5.9 mm, at 12 m, Start Bay, Mayaguana I., Bahama Is., G. Mackintosh!, 18 Feb 1993 (author’s coll.).</p> <p> <b>Type locality.</b> W side of Allen’s Cay, Exuma, Bahama Is., in 6.4 m.</p> <p> <b>Other material examined.</b> 1 spec., 13.1 x 5.0 mm, at 3 m, Honeymoon Cove, Gun Cay, Bimini Is., G. Mackintosh! 8 Apr 1994 (author’s coll.).</p> <p> <b>Range and habitat.</b> Bahama Is. (Gun Cay, Bimini Is.; Allan’s and Highborne Cays, Exuma; Mayaguana I.) in 3– 12 m.</p> <p> <b> Description. <i>Shell</i></b> small (to 15.3 mm), fusiform, truncated anteriorly, to approximately 9 whorls; body whorl large compared to spire whorls, approximately 58% of total shell height. <i>Protoconch</i> of 2 smooth round whorls, the first only slightly smaller in diameter than second. <i>Axial sculpture</i> of weak, narrow ribs on first, strong on second and succeeding whorls, extending from suture-to-suture, abruptly narrowed, arcuate, and reduced in the sulcus, forming a distinct shoulder at the edge of the sulcus. Ribs about as wide or less than their interspaces; most slightly opisthocline overall, 12–13 on the penultimate whorl, 7–11 to the varix on the body whorl. Microscopic growth striae are present throughout, but finer compared with other members of the genus. <i>Varix</i> broad, hump-like, ⅓-turn back from edge of outer lip. <i>Spiral sculpture</i> consisting of a microsculpture of fine parallel jagged lines closely spaced in sulcus, more widely spaced anterior to the shoulder (approximately 4/mm on body whorl), together with fine axial striae that form shallow pits on shell surface. <i>Sulcus</i> wide, about ¼- to ⅓-whorl height; slightly convex with rib traces curved in an arc reflecting the outline of the anal sinus. <i>Outer lip</i> thin, smooth-edged, forming a gentle continuous curve from the anal sinus to the canal tip; strengthened by up to four irregular axial folds between the varix and edge of outer lip; not toothed but with small crenulations along its inside edge; stromboid notch shallow. <i>Anal sinus</i> deep, sinus angled away from the suture by a parietal callus. <i>Inner lip</i> margined; thickest on the anterior canal, thin in the parietal area, and forming a thick parietal callus near the junction with the outer lip. <i>Anterior canal</i> short, deeply channeled and notched; twisted to the left viewed ventrally; anterior fasciole slightly swollen, its surface marked by spiral ridges. <i>Color</i> an uneven brown with lighter and darker areas, except apex (protoconch and first teleoconch whorl), anterior fasciole, and distal end of anterior canal, which are white. Darker brown in a band on the top of the shoulder and between the ribs; rib crests and anterior halves of the whorls lighter brown. Some specimens have irregular patches of white or broken white bands.</p> <p> <b> Remarks. <i>Taxonomy.</i></b> Fenimorea mackintoshi exhibits all of the critical characteristics of <i>Fenimorea</i>: numerous ribs from suture-to-suture but transformed in the sulcus, surface microsculpture typical for the genus, and varix hump-like about ⅓-turn from the edge of the outer lip. It is unique for the genus in its coloration and in possessing a relatively narrow shell. <i>Variability.</i> The specimens vary little in color; some exhibit faint white bands on whorl shoulder or irregular patches, but otherwise quite uniform. The average length of 17 measured specimens is 13.23 mm (12.3–15.3 mm), their average W/ L ratio is 0.372. The specimens vary by only 3 mm in length, and are relatively slim for the genus. <i>Identification.</i> Specimens of <i>F. mackintoshi</i> first appear to be small or oddlycolored <i>F. f u ca t a</i> because of its similarity in shell sculpture and color; however, it differs in a number of ways. The protoconch whorls are more evenly sized, not tapering; the teleoconch is slenderer; the microscopic spiral lines are not as numerous and variable as in <i>F. f u c at a</i>; the axial growth lines are not as prominent; and the outer lip lacks projecting teeth. From <i>F. jongreenlawi</i>, new species and <i>F. caysalensis</i>, new species it differs in size, shell shape, shell microsculpture, and in coloration.</p> <p> <b>Etymology.</b> Gary Mackintosh’s <i>Fenimorea</i>. Named for Gary Mackintosh who collected all of the specimens studied here, and for the contribution to science his efforts have yielded.</p>Published as part of <i>Fallon, Phillip J., 2016, Taxonomic review of tropical western Atlantic shallow water Drilliidae (Mollusca: Gastropoda: Conoidea) including descriptions of 100 new species, pp. 1-363 in Zootaxa 4090 (1)</i> on page 181, DOI: 10.11646/zootaxa.4090.1.1, <a href="http://zenodo.org/record/263299">http://zenodo.org/record/263299</a>
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The changing constitution ::constitutional law in the Trump-era Supreme Court /
No full text"In The Changing Constitution, Richard H. Fallon Jr. explores the constitutional law of the United States as reflected in decisions of the Supreme Court, including recent blockbusters. The author analyses controversial rulings addressing topics such as freedom of speech and religion, the Second Amendment right to bear arms, abortion, affirmative action, gay rights, and the powers and prerogatives of the President. Examining modern controversies from a historical perspective he argues that it's impossible to understand U.S. constitutional law without recognizing the political and institutional forces that always have brought, and will continue to bring, innovations and occasional reversals in constitutional doctrine. Fallon also highlights distinctive aspects of the current era, including the judicial philosophies of the sitting Justices. This intellectually sophisticated overview of constitutional law and Supreme Court practice additionally discusses anxieties about whether and how the Justices, who can overrule their own precedents, are meaningfully constrained by law"-
Clathrodrillia colombiana Fallon, 2016, new species
No full textClathrodrillia colombiana, new species (Plate 39) Type material. Holotype 44.4 x 17.9 mm, J. Poulos! 1991 (UF 470280). No paratypes. Type locality. Off Cabo de la Vela, Guajira Dept., Colombia, in 200 ft [61 m]. Range and habitat. Colombia (off Guajira Dept.). If the specimens illustrated in Daccarett & Bossio (2011) and K. & L. Sunderland (1999 c) are this species, then its range would include Magdalena Dept., Colombia and the Gulf of Venezuela, respectively. The single reported depth is 61 m. Description. Shell medium (44.4 mm total length; may be to 59 mm, if the Sunderland & Sunderland 1999 c report is this species), fusiform with a tall, turreted spire, and narrow, moderately long anterior canal; suture appressed, made somewhat [wavy] over previous whorl’s ribs; whorls straight-sided on spire, number approximately 10 total, the last 58 % of total shell length. Sculpture of numerous ribs cut by closely spaced grooves; aperture narrow. Protoconch unknown, missing on holotype. Axial sculpture of numerous narrow ridge-crested ribs (18 on penultimate and 11 on last whorl to varix), straight on spire whorls, slightly sigmoidal on last whorl where they narrow and evanesce on shell base to anterior fasciole. Ribs end abruptly at sulcus, producing squareangled shoulders, extending to suture only as raised lines, or traces not much larger than growth striae. Varix low, broad, hump-like, positioned approximately ⅓-turn from edge of outer lip. Appearing like a series of ribs only partly fused. Spiral sculpture of deep, closely-spaced grooves that result in cord-like spirals overriding ribs. Cords are somewhat ridged (squared rather than round) on their abapical sides, number 5 on penultimate, 15 on last whorl, and 8 more shallow, closely spaced grooves on anterior fasciole. Sulcus flat, wide, with coarse, curved growth striae along with rib traces, and fine spiral grooves that are mostly masked by the ribs and growth striae. Outer lip slightly flattened from varix to its edge such that it protrudes beyond the shell’s circumference; has approximately 10 irregular axial folds; edge forms a low arc from anal sinus to anterior canal with only a slight indentation marking the stromboid notch. Teeth are absent but spiral grooves appear scalloped when viewed ventrally. Anal sinus a deep U-shaped notch offset laterally by the parietal lobe such that it appears spout-like. Inner lip margined, recumbent on parietal wall, erect anteriorly, formed into an elongate lobe on the parietal side of the anal sinus posteriorly. Anterior canal moderately long, open, turned to the right when viewed ventrally, slightly notched; fasciole not swollen. Color yellow-brown overall; aperture, fasciole, and rib crests on shoulder white; brown patch on varix. Remarks. Taxonomy. Clathrodrillia colombiana has all of the characteristics of Clathrodrillia: strong spiral sculpture, ribs that are angled at whorl shoulders giving it a turreted outline, a hump-like varix, and narrow aperture with a moderately long anterior canal and spout-like anal sinus. Identification. Clathrodrillia colombiana is most similar to C. gibbosa (Born, 1778) and C. petuchi (Tippett, 1995). It differs from C. gibbosa in being stouter (shorter spire), and broader (W/L = 0.403 versus avge. W/L = 0.371), and in being colored differently. From C. petuchi it differs in having more ribs (18 versus 13–15 on the penultimate whorl), deeper spiral grooves over its shell surface, and in being colored differently. Although this taxon is based on a single specimen, it is uniquely different from its most similar congeners as explained above. Specimens of C. gibbosa from Colombia do not resemble C. colombiana and thus the latter is not a geographic varient. Furthermore, illustrations in Daccarett & Bossio (2011) and Sunderland &. Sunderland (1999 c) are clearly of this species, being similar in appearance, and thus giving evidence that supports the constancy of and validity of this species. Etymology. The Colombian Clathrodrillia. Named for the country of the type locality.Published as part of Fallon, Phillip J., 2016, Taxonomic review of tropical western Atlantic shallow water Drilliidae (Mollusca: Gastropoda: Conoidea) including descriptions of 100 new species, pp. 1-363 in Zootaxa 4090 (1) on pages 89-90, DOI: 10.11646/zootaxa.4090.1.1, http://zenodo.org/record/26329
Crystal structure of tert-butyl 2-(2-oxo-2-phenylethyl)-3-phenyl-cyclopropane carboxylate, C22H24O3
No full textC22H24O3, triclinic, P1̄ (No. 2), a = 6.0591(3) Å, b = 15.2931(9) Å, c = 20.501(1) Å, a = 98.598(2)°, β = 97.471 (3)°, γ = 96.224(3)°, V = 1846.5 Å3, Z = 4, Rgt(F) = 0.057, wRref(F) = 0.048, T = 173 K. © by Oldenbourg Wissenschaftsverlag.T. D. Avery, G. D. Fallon, D. K. Taylor and E. R. T. Tiekinkhttp://www.oldenbourg.de/verlag/zkristallogr/mn-ncsc0004.ht
Cerodrillia brasiliensis Fallon, 2016, new species
No full text<i>Cerodrillia brasiliensis</i>, new species <p>(Plate 23)</p> <p> <i>Cerodrillia clappi</i> auct. non Bartsch & Rehder, 1939, a misidentification by Absalão <i>et al.</i> (2005: 22, fig. 4) that may be this species.</p> <p> <i>Syntomodrillia espyra</i> auct. non Woodring, 1928: is a misidentification by Rios (2009: 314, sp. 799) that may be this species. <i>S. espyra</i> is a fossil species from the Bowden beds of Jamaica.</p> <p> <b>Type material.</b> Holotype 8.0 x 3.3 mm (MZSP 122058); 31 paratypes: 18 spec., 7.2 x 3.0 mm (UF 470277), 7.9 x 2.9 & 9.2 x 3.4 mm (P. Stahlschmidt coll.), 6.9 x 2.8, 6.8 x 2.6, 6.9 x 2.7, 7.1 x 2.7, 6.6 x 2.5, 7.5 x 2.8 mm (MNRJ 34633), 6.7 x 2.6, 6.6 x 2.8, 6.5 x 2.4, 6.5 x 2.5, 6.8 x 2.6, 7.0 x 2.8 mm (ANSP 464968), 6.8 x 2.6, 6.8 x 2.5, 6.5 x 2.5 & 6.6 x 2.5 mm (UF 496634), in 100–150 m, off Santos, São Paulo, Brazil; 12 spec., 5.9 x 2.6, 6.8 x 2.6, 5.9 x 2.6, 6.0 x 2.5, 5.8 x 2.5, 6.4 x 2.6 mm (BMSM 14987), 6.1 x 2.7, 6.8 x 2.8, 5.6 x 2.3, 6.3 x 2.5 mm (MZSP 122059), 6.7 x 2.7 & 6.0 x 2.4 mm, in 100 m, off Cabo Frio, Rio de Janeiro, Brazil (author’s coll.).</p> <p> <b>Type locality.</b> Off Rio de Janeiro, Rio de Janeiro State, Brazil, in 70– 100 m.</p> <p> <b>Other material examined.</b> An additional three specimens were examined: 1 spec., 7.5 x 3.0 mm, in 100–150 m, off Santana I., Rio de Janeiro, Brazil, shrimpers! May 1997 (USNM 900154); 1 spec., 6.9 x 2.7 mm, in 29 m, off Cabo frio, Rio de Janeiro, Brazil (24°51'S, 042°03'W) <i>Saldanha</i> ! (ANSP 353333); 1 spec., 8.7 x 3.2 mm, in 20–25 m, off Guarapari, Espirito Santo State, Brazil (P. Stahlschmidt coll.).</p> <p> <b>Range and habitat.</b> Southern Brazil (Espirito Santo State; Rio de Janeiro State; São Paulo State). Absalão <i>et al.</i> (2005) report <i>C. clappi</i> Bartsch & Rehder, 1939 in samples from off Rio de Janeiro, 22°48′43″S, 41°09′19″W, and from a station off the Espirito Santo/Bahia boundary area, 18°20′28″S, 38°55′34″W, that may be <i>C. brasiliensis</i> on the basis of their description. Rios (2009: 314) reports what may be this species from off São Tome, Rio de Janeiro, Brazil. Examined specimens were reported from 20– 150 m.</p> <p> <b> Description. <i>Shell</i></b> very small (to 9.2 mm in total length), glossy, fusiform with a truncated anterior; whorls convex, peripheries below mid-whorl, last whorl large, approximately 58% of total length, asymmetrical, right side (viewed ventrally) swollen by varix; sculpture of low sigmoid ribs. <i>Protoconch</i> of 1¾–2 smooth whorls, the first mostly immersed in the second such that the shell’s apex appears roundly blunt. Edge of protoconch lip distinct. <i>Axial sculpture</i> of opisthocline to sigmoid (on last whorl) ribs that extend from suture-to-suture on early but mostly obsolete in sulcus of later whorls; widest and highest on the whorl periphery, lower, thinner, and cordlike in sulcus; lower and narrower below whorl periphery, with traces to anterior fasciole. Light growth striae present, heaviest on last whorl. <i>Sulcus</i> marked by reduced or entirely absent ribs (in later whorls); ribs and growth striae curved reflecting outline of anal sinus. <i>Varix</i> is cup-handle-like just behind the anal sinus, about ¼-turn from the outer lip, 2–3 times larger than preceding ribs and straight, not oblique. <i>Spiral sculpture</i> absent except for weak spiral threads on the anterior fasciole. <i>Outer lip</i> thin, edge bent inward posteriorly. A narrow strengthening axial fold lies between the varix and edge of outer lip. <i>Anal sinus</i> on whorl’s shoulder, deeply notched, apex round, angled away from shell’s axis with by a large parietal lobe on one side and the slight outward inflection of the outer lip on the other. Sides of anal sinus divergent. <i>Inner lip</i> narrow; thickest on canal, thin, unemarginate on parietal wall, ending in a tubercle at anal sinus. <i>Anterior canal</i> straight, short and open; without a notch. Anterior fasciole not swollen, bearing 5–8 weak spiral threads. <i>Color</i> a uniform light golden brown, ribs lighter, almost white on some.</p> <p> <b> Remarks. <i>Taxonomy.</i></b> Cerodrillia brasiliensis has all of the diagnostic characteristics of <i>Cerodrillia</i>: a cuphandle-like varix just behind the anal sinus, spiral sculpture limited to the shell base and anterior fasciole; and ribs from suture-to-suture, which may be obsolete in sulcus of later whorls. <i>Variability.</i> Most of the 35 examined shells are fairly uniform; their average total length is 6.81 mm (5.6–9.2 mm) and average W/ L ratio 0.397. The single specimen from off Guarapari, Espirito Santo, departs from the norm; it has very low, almost obsolete ribs that are represented by whitish nodes on the whorl shoulder. The nodes are connected by a faint white spiral line with a faint brown shadow line. This specimen is tentatively assigned here but may represent a separate species. <i> <i>Identification.</i> Cerodrillia brasiliensis</i> is not easily confused with known congeners. It is one of two other similar species, both in different genera, found offshore of southern Brazil: <i>Bellaspira rosea</i>, new species, and <i>Lissodrillia cabofrioensis</i>, new species. All three are similarly colored, small, and with weak axial sculpture. <i>Cerodrillia brasiliensis</i> differs from the other two in possessing a cup-handle-like varix typical of <i>Cerodrillia</i>, and axial ribs that run from suture-to-suture. Axials of <i>B. rosea</i> are very short, appearing on little more than the whorl periphery but axials of <i>L. cabofrioensis</i> end abruptly at the sulcus, do not extend to the suture as in <i>C. brasiliensis</i> and <i>B. rosea</i>. Shell surface microsculpture also differs. <i>Cerodrillia brasiliensis</i> has spiral lines and grooves restricted to the shell base, <i>L. cabofrioensis</i> has none; <i>B. rosea</i> has spiral lines over most of the shell’s surface.</p> <p> <b>Etymology.</b> The Brazilian <i>Cerodrillia</i>. Named after the country where it is known to occur.</p>Published as part of <i>Fallon, Phillip J., 2016, Taxonomic review of tropical western Atlantic shallow water Drilliidae (Mollusca: Gastropoda: Conoidea) including descriptions of 100 new species, pp. 1-363 in Zootaxa 4090 (1)</i> on pages 60-62, DOI: 10.11646/zootaxa.4090.1.1, <a href="http://zenodo.org/record/263299">http://zenodo.org/record/263299</a>
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