262,273 research outputs found
Cryptodaphne adiaphora Morassi & Bonfitto 2010, new species
No full textCryptodaphne adiaphora new species Figures 1. A–F Type material: Holotype MHNH 22300. Type Locality: Fiji SE Viti Levu, 18°00.0’ S 178°53.7’E, 1058–1091 m [MUSORSTOM 10 stn. CP 1361]. Material examined: only known from the holotype. Description: Shell narrowly biconic (b/l 0.41; a/l 0.45). Teleoconch consisting of 4.5 whorls separated by moderately deep, not channelled suture. Last whorl strongly excavated with short neck. Most whorl height occupied by a wide and nearly vertical sutural ramp. Subsutural fold moderately prominent, with its lower margin bordered by a narrow spiral cord. Spire whorls sculptured by a moderately prominent peripheral cord near lower suture of each whorl; a second weaker cord occurs on lower part of sutural ramp. Lower part of each whorl sculptured by two spiral cords, the lower much stronger, forming a peripheral keel; last whorl with two weak cords above peripheral keel and a second main cord just above lower suture. Last whorl with 13 widely spaced, narrow spiral cords on base and neck. Sutural ramp sculptured by sigmoid collabral threads producing minute plicules on subsutural fold. Under SEM, entire shell surface is seen covered by rows of spirally aligned granules. Aperture narrow, oblanceolate. Columella almost straight above, slightly curved to left below. Labial callus thin, sculptured by microscopic rows of prickly nodules in its interior part (fig. 1D). Siphonal canal relatively short, oblique, narrow. Outer lip thin; based on growth lines anal sinus moderately deep, reversed L-shaped anal sinus with its apex below middle of sutural ramp. Protoconch narrowly conical of 3.8 whorls; protoconch I partly missing, protoconch II sculptured by opisthocyrt axial riblets extending from suture to suture decussate by oblique threads on lower two-third of each whorl. Protoconch breadth: 0.52 mm. Teleoconch white, protoconch pale buff. Dimensions: Holotype 5.6 x 2.3 mm, aperture height 2.5 mm. Remarks: This is a typical representative of the genus Cryptodaphne. In its small size and shell outline, Cryptodaphne adiaphora resembles C. kilburni Morassi & Bonfitto, 2006, from which it differs in numerous details of sculpture. In C. adiaphora the spire whorls are sculptured by a prominent peripheral cord and a weaker cord on lower part of sutural ramp (figs. 1B–C); a second main cord develops just above lower suture on last whorl (fig. 1A). In C. kilburni the peripheral cord is barely stronger than other spiral elements and 3–4 cords occur below it on last whorl. Furthermore, C. adiaphora has much fewer collabral threads. Finally, the protoconch of C. adiaphora (fig. 1E–F) consists of nearly 4 whorls compared to 3.25 of C. kilburni. C. adiaphora differs from the fossil C. pseudodrillia Powell, 1942 in lacking secondary cords between main spiral elements (fide Powell 1942) and in having fewer protoconch whorls (nearly 4 vs 5). Etymology: Greek adiaphoros (not different, neutral), with reference to the morphological resemblance of this species to “typical” members of Cryptodaphne.Published as part of Morassi, M. & Bonfitto, A., 2010, New raphitomine gastropods (Gastropoda: Conidae: Raphitominae) from the South-West Pacific, pp. 54-68 in Zootaxa 2526 on page 5
Horaiclavus adenensis Bonfitto & Morassi, 2014, sp. nov.
No full text<i>Horaiclavus adenensis</i> sp. nov. <p>Figures 1A–L</p> <p> <b>Type material.</b> Holotype (MZB 60078), 8 paratypes (MZB 60079), 1 paratype MNHN, 1 paratype ZMA, 1 paratype NHMUK, 1 NMNS, 1 ZMC, 1 ZRA, all from the type locality.</p> <p> <b>Type locality.</b> Gulf of Aden (Indian Ocean), stn. RED SED 92/1, 11º55'95"N, 44º22'70"E to 11º55'82"N, 44º22'53"E, 795– 810 m.</p> <p> <b>Material examined.</b> 15 dd from Gulf of Aden, stn. RED SED 92/1, from 11º55'95"N, 44º22'70"E to 11º55'82"N, 44º22'53"E, 795–810 m (holotype and 14 paratypes); 1 dd from Gulf of Aden, stn. RED SED 92/2, between 12º02'36"N, 44º29'53"E and 12º02'46"N, 44º30'82"E, 1395–1400 m (coated, MZB 60080).</p> <p> <b>Description.</b> Shell claviform (b/l 0.48–0.51; a/l 0.40–0.42) (Fig. 1A–C, E) with a moderately high orthoconoid spire and a short, contracted and quite strongly tapering base. Protoconch papilliform of about 1¼–1½ smooth whorls (Fig. 1I –J) with a weak submedian keel near termination bordered by few spiral rows of granules (Fig. 1K–L). Maximum protoconch diameter 0.57 mm. Teleoconch of up to ca. 4½ whorls with shallowly impressed, slightly wavy suture. Whorls strongly convex, gradate; first whorl bluntly angled near middle, subsequent whorls with a well rounded shoulder above mid-whorl height on later two teleoconch whorls. Subsutural ramp is narrow, weakly concave on earlier two whorls, convex on later whorls. Axial sculpture of strong, slightly arcuate and weakly opisthocline folds, extending from suture to suture, weakening on subsutural ramp and fading on lower shell base. Axial ribs of rounded triangular crosssection, interspaces concave, broader than ribs. There are 10–11 axial ribs on last two teleoconch whorls. Spiral sculpture represented only by three weak threads on rostrum. Aperture is oval, with rather short siphonal canal. Anal sinus weak, just an insinuation of thin lip edge (Fig. 1D). Inner lip evenly curved, columellar part straight, parietal callus forming a weak pad. Under SEM the surface of the interior part of the inner lip is seen to be covered by squamiform pustules (Fig. 1H). Outer lip has a heavy varix behind thin lip edge. Shell glossy and white. Dimensions: Holotype: 4.5 x 2.3 mm, aperture height 1.9 mm. Largest paratype: 5.0 x 2.4 mm, aperture height 2.1 mm; smallest paratype of the series, probably a shell of an immature specimen with 3.8 teleoconch whorls: 3.8 x 1.9 mm, aperture height 1.6 mm.</p> <p> <b>Etymology</b>. <i>adenensis</i>, alluding to the fact that the new species is described from the Gulf of Aden.</p> <p> <b>Remarks</b>. <i>Horaiclavus adenensis</i> <b>sp. nov.</b> is characterized by its small size and presence of a submedian keel in the terminal part of the protoconch. Among its supposed congeners, it is comparable to <i>Horaiclavus anaimus</i> Sysoev <i>in</i> Fedosov & Kantor, 2008 in shape and number of protoconch whorls but differs from the latter mainly in its much smaller dimensions (up to 5 mm vs up to 12 mm in maximum length), more strongly convex spire whorls, spiral sculpture restricted to rostrum, shorter siphonal canal and presence of a weak keel in the terminal part of the protoconch, a feature not reported so far in any of its described congeners. The presence or absence of a keel in the protoconch is currently regarded as a doubtful feature in supraspecific classification; also we cannot exclude the possibility that SEM examination would show the presence of this feature in other <i>Horaiclavus</i> or <i>Horaiclavus</i> -like species. <i>H. adenensis</i> <b>sp. nov.</b> superficially resembles in shape, axial sculpture and presence of a carinate protoconch the shallow water <i>Clavus costatus</i> Hedley, 1922 (= <i>Gracicliclava mackayensis</i> Shuto, 1983), from Queensland (Australia), type species of <i>Graciliclava</i> Shuto, 1983, a genus currently regarded as closely related to and possibly a subgenus of <i>Anacithara</i> Hedley, 1922 (Kilburn, 1994), also included in the Horaiclavidae (Bouchet <i>et al.</i>, 2011). However, according to Shuto (1983:11–12) the shell surface of <i>Graciliclava costata</i> (Hedley, 1922) is sculptured by “dense and minute spiral lines” of different order of strength as in members of the genus <i>Anacithara</i> and the protoconch keel is stronger than in <i>H. adenensis.</i></p>Published as part of <i>Bonfitto, Antonio & Morassi, Mauro, 2014, Two new Horaiclavus (Horaiclavidae, Conoidea) species from the Indo-Pacific region, pp. 146-150 in Zootaxa 3821 (1)</i> on page 147, DOI: 10.11646/zootaxa.3821.1.12, <a href="http://zenodo.org/record/229715">http://zenodo.org/record/229715</a>
Horaiclavus ordinei Bonfitto & Morassi, 2014, sp. nov.
No full text<i>Horaiclavus ordinei</i> sp. nov. <p>Figures 1 M–T</p> <p> <b>Type material</b>. Holotype (MZB 60081) and paratype (MZB 60082).</p> <p> <b>Type locality</b>. Balicasag Island, Philippines trawled by local fishermen at about 200 m.</p> <p> <b>Material examined.</b> 2 dd from the type locality.</p> <p> <b>Description</b>. Shell broadly claviform (b/l 0.53–0.57; a/l 0.41–0.44) (Fig. 1.M–P) with a moderately high orthoconoid spire and a short, contracted and quite strongly tapering base. Protoconch papilliform of about 1½ smooth whorls (Fig. 1 S–T). Maximum protoconch diameter 0.57 mm. Teleoconch of up to about five whorls with deeply impressed, strongly wavy suture. Whorls strongly convex with an angled periphery just below mid-whorl height on earlier whorls, at middle on last two whorls. Subsutural ramp narrow, shallowly concave. Axial sculpture of strong, slightly arcuate and weakly opisthocline folds, extending from suture to suture, slightly weakening on subsutural ramp and extending on base but not on rostrum. Axial ribs of rounded triangular cross-section, interspaces concave, slightly broader to about the same width as ribs. There are nine axial folds on last two teleoconch whorls. Spiral sculpture commencing with a peripheral cord forming shoulder angle, joined on second whorl by a closely-spaced weaker cord below periphery, and a third cord near abapical suture on last two whorls (Fig. 1 Q); in the paratype of fourth rather weak spiral cord in the interspace between the two adapical cords and cord bordering abapical suture. Last whorl has three spiral threads on base and five threads on rostrum. Aperture oval, with a distinct, narrow, proportionally long (for genus) siphonal canal. Inner lip has a relatively thick callus forming a weak parietal tubercle. Fasciole is strong; a shallow but distinct false umbilicus is present. Outer lip has with heavy varicoid-rib behind thin lip edge. Anal sinus shallow but distinct. Shell pale buff colored. Dimensions: Holotype: 5.8 x 3.1 mm, aperture height 2.4 mm. Paratype: 4.9 x 2.8 mm, aperture height 2.2 mm.</p> <p> <b>Etymology</b>. Named after Professor Nuccio Ordine of the University of Calabria, Italy.</p> <p> <b>Remarks.</b> <i>Horaiclavus ordinei</i> <b>sp. nov.</b> is a rather peculiar species morphologically and is characterized by its small dimensions, relatively low spire, strong fasciole, relatively long siphonal canal and presence of few but distinct spiral cords. The southwestern Pacific species <i>Horaiclavus phaeocercus</i> Sysoev <i>in</i> Fedosov & Kantor, 2008 and <i>H. anaimus</i> Sysoev <i>in</i> Fedosov & Kantor, 2008 are superficially similar to the new species in proportions but attain a larger size (up to about 6 mm in length vs ca. 12 mm) and lack spiral sculpture on spire whorls. Among <i>Horaiclavus</i> species, <i>H. multicostatus</i> (Schepman, 1913) from Indonesia has a distinct spiral cord forming a peripheral angulation on spire whorls, but otherwise spiral sculpture in restricted to base and rostrum. Shuto proposed the monotypic subgenus <i>Anguloclavus</i> Shuto, 1983 for <i>H. multicostatus</i> (Schepman, 1913) but the status of this latter taxon, as well as of the two species here described, will remain uncertain until anatomical and/or molecular features become known.</p>Published as part of <i>Bonfitto, Antonio & Morassi, Mauro, 2014, Two new Horaiclavus (Horaiclavidae, Conoidea) species from the Indo-Pacific region, pp. 146-150 in Zootaxa 3821 (1)</i> on page 149, DOI: 10.11646/zootaxa.3821.1.12, <a href="http://zenodo.org/record/229715">http://zenodo.org/record/229715</a>
Acanthodaphne pungens Morassi & Bonfitto 2010, new species
No full textAcanthodaphne pungens new species Figures 3. I–M Type material: Holotype MNHN 22310. Type locality: Solomon Islands, 9°21.3" N 160°24.6 "E, 387 m [N/ O Alis, SALOMON 1, stn. CP 1786]. Material examined: only known from the holotype. Description: Shell biconic (b/l 0.43; a/l 0.43), small but very stout. Teleoconch consisting of 5.5 whorls which are sharply angled just below middle on early two whorls, just above middle on last two whorls. Last whorl strongly excavated with a relatively long neck. Whorls separated by a deep, strongly undulating suture margined by a prominent subsutural fold. Sutural ramp wide, strongly concave. Axial sculpture consisting of short, prominent, opisthocline ribs, extending from lower suture to shoulder angle on spire, extending across base but not onto neck on last whorl. There are 11 ribs on penultimate whorl, 14 on last. Subsutural fold bearing a row of tubercles corresponding in number to axial ribs. Sutural ramp sculptured by fine collabral threads sinuous in conformity with the anal sinus. Spiral sculpture consisting of broad, flattened cords forming conspicuous nodules at points of intersection with axial ribs. Earlier whorls with one peripheral cord, forming shoulder angulation, joined on subsequent whorls by a weaker cord anteriorly. Nodules particularly sharp and prominent on peripheral cord, somewhat more rounded on second cord. Base sculptured with 2 nodulose cords; neck with 2 weak cords and 3 fine threads. Aperture lanceolate. Columella almost straight above, curved to left below forming a relatively long siphonal canal. Labial callus relatively thick over columella, wide, sculptured by microscopic rows of prickly nodules in its interior part. Outer lip thin; based on growth lines anal sinus moderately deep, broadly U-shaped. Protoconch conical of about 3 whorls, superficial layer of its surface dissolved but sculpture evidently diagonally cancellated. Protoconch diameter: 0.58 mm. Teleoconch white, protoconch yellowish-beige. Dimensions: Holotype 7.0 x 3.0 mm, aperture height 3.0 mm. Remarks: Acanthodaphne pungens is a very distinctive species readily recognised because of its ornamentation of conspicuous, sharp nodules (figs 3 J–K). Etymology: Latin pungens alluding to the prickly sculpture of this species.Published as part of Morassi, M. & Bonfitto, A., 2010, New raphitomine gastropods (Gastropoda: Conidae: Raphitominae) from the South-West Pacific, pp. 54-68 in Zootaxa 2526 on page 6
Mioawateria ektonos Morassi & Bonfitto 2010, new species
No full textMioawateria ektonos new species Figures 2. A–I Type material: Holotype MNHN 22304. Paratypes: 1 MNHN 22305, 1 MZB 45713, 1 ZRC 2981. Type locality: Solomon Islands, 09°32.6’S 160°37.3’E, 283–305m [SALOMON 1 Stn CP 1859]. Material examined: only known from the type material. Description: Shell fusiform to fusiform-biconic (b/l 0.41–0.46; a/l 0.35–0.37). Teleoconch consisting of up to 8 whorls angularly shouldered above mid-whorl. Last whorl strongly excavated with a rather short neck, strongly curved to left. Sutural ramp almost horizontal. Subsutural fold very weak on earlier whorls, absent on later ones. Axial sculpture consisting of narrow, raised axial ribs rather straight below shoulder, prosocline above it. There are 13–16 axial ribs on penultimate whorl; 15–17 on last whorl. Axial ribs crossed by slightly narrower, wide-set spiral cords producing narrow, sharp nodules at points of intersection. Early whorls sculptured by two spiral cords, the upper one at shoulder angle; on later whorls a weak cord appears just above lower suture, developing during growth into a third main cord. On last whorl each interspace between spiral cords may bear a secondary cord. Base of last whorl sculptured by 3–4 spiral cords; 2–5 closely spaced spiral threads occur on the neck. Entire surface covered by coarse axial growth lines. Aperture subrectangular. Columella almost straight above, distinctly curved to left below. Labial callus thin, sculptured by microscopic rows of prickly nodules in its interior part (fig. 2G). Outer lip thin with an extremely weak anal sinus. Protoconch conical, of 2.75–3 whorls; protoconch I covered with minute, dense spiral threads rendered granulose where crossed by even finer axial threads; protoconch II sculptured by opisthocyrt axial riblets extending from suture to suture decussate by oblique threads on anterior two thirds of each whorl. Protoconch breadth: 0.49 mm. Color beige-white. Dimensions: Holotype 11.8 x 4.6 mm, aperture height 3.9 mm; largest Paratype: 8.7 x 4.0 mm, aperture height 3.2 mm. Remarks: This species is provisionally designated to the genus Mioawateria. In its high spire Mioawateria ektonos is superficially similar to Magnella andersoni Dittmer, 1960 and P. tornata var. malmii Dall, 1889 but differs from other Mioawateria species in lacking a “moniliform” subsutural fold and in possessing a rather small protoconch (figs. 2H–I). The new species is rather remarkable in that it has a prickly teleoconch sculpture (figs. 2E–F), somewhat reminiscent of members of the genus Raphitoma Bellardi, 1848. The only similar described species we have been able to find is “ Puha ” sinusigera Powell, 1942, an Early Miocene species from New Zealand of uncertain affinities. Mioawateria ektonos differs from “ Puha ” sinusigera in its much larger size (8.7–11.8 mm vs 5.1 mm in length), more numerous teleoconch whorls (up to 8 vs 4) and fewer protoconch whorls (2.75–3 vs 6) (figs. 2H–I). Both species have a high, stepped spire and resemble Mioawateria in the shape of the teleoconch whorls and in possessing an extremely weak anal sinus. Further investigations, based on anatomical and/or radular characters, will probably show that M. ektonos belongs to an undescribed genus, but for now attribution to the genus Mioawateria, taken in a broad sense, can be retained. Etymology: Greek tonos (tune) and prefix ek - (out of), alluding to the peculiar morphological features of this species that are not in harmony with those of its congeners.Published as part of Morassi, M. & Bonfitto, A., 2010, New raphitomine gastropods (Gastropoda: Conidae: Raphitominae) from the South-West Pacific, pp. 54-68 in Zootaxa 2526 on pages 60-6
Acanthodaphne boucheti Morassi & Bonfitto 2010, new species
No full textAcanthodaphne boucheti new species Figures 3. A–H Type material: Holotype MNHN 22308. Paratypes: 1 MNHN 22309, 1 MZB 45715, 1 ZRC 2980. Type locality: Solomon Islands, 08°19.4’S 160°38.7’E, 194–286 m [N/ O Alis, SALOMON 1, stn. DW 1770]. Material examined: only known from the type material. Description: Shell biconic (b/l 0.39–0.44; a/l 0.40–0.44). Teleoconch consisting of up to 6.5 whorls which are strongly shouldered near middle on early two whorls, above middle on subsequent ones. Last whorl shallowly excavated with a short neck. Whorls separated by a weakly impressed suture margined by a prominent subsutural fold. Sutural ramp relatively narrow, strongly concave. Axial sculpture consisting of prominent opisthocline ribs of rounded triangular cross-section, extending from lower suture to shoulder angle, where they are abruptly truncated and form tubercles. Axial ribs rapidly fading over upper part of base on last whorl. There are 13–14 axial ribs on penultimate whorl, 17–19 on last whorl. Subsutural fold bearing a row of tubercles corresponding in number to axial ribs; in the holotype, which is the largest specimen, the tubercles becomes more numerous than axial ribs (about one and a half their number) on last two whorls. Sutural ramp sculptured by fine collabral threads sinuous in conformity with the anal sinus. Spiral sculpture consisting of low, flattened cords and threads. First whorl with a moderately prominent peripheral cord joined on subsequent whorl by a second cord anteriorly. Later two whorls with 3–4 primary cords; 1–2 secondary cords or threads occur in the interstices between main cords. Base sculptured by 9–11 widely spaced primary and secondary cords and 6–8 fine threads on the neck. Under SEM magnification, spiral cords are smooth, but their interstices and sutural ramp are covered by dense rows of granules. Aperture broad, oval. Columella nearly straight. Siphonal canal broadly open, poorly differentiated from aperture. Labial callus relatively thick over columella, wide, sculptured by microscopic rows of prickly nodules in its interior part (fig. 3F). Outer lip thin with a moderately deep, reversed L-shaped anal sinus; its deepest point below middle of sutural ramp. Protoconch conical of 3+ whorls; protoconch I missing, protoconch II sculptured by opisthocyrt axial riblets extending from suture to suture decussate by oblique threads on lower third of each whorl. Teleoconch white, protoconch yellowish-beige. Dimensions: Holotype 12.2 x 4.8 mm, aperture height 4.9 mm; largest paratype: 7.9 x 3.5 mm, aperture height 3.5 mm. Smallest paratype measures 7.4 mm in height and has a broken outer lip; smallest undamaged paratype: 7.7 x 3.4 mm, aperture height 3.3 mm. Remarks: Acanthodaphne boucheti is larger than any other described Acanthodaphne species. It further differs from A. sabellii in its higher spire, higher shoulder angulation on the teleoconch whorls (figs 3C–D), more numerous spiral cords and more numerous axial ribs (17–19 vs 14–16 on last whorl), which are markedly weaker on the last whorl. Furthermore, in Acanthodaphne boucheti the tubercles on the subsutural fold are relatively large and as numerous as the ribs or one and a half times their number (in the holotype), rather than twice their number as in A. sabellii. In this feature A. boucheti resembles Pseudoinquisitor ? cf P. ? pulchra (Schepman, 1913) figured by MacNeil (1960) but otherwise differential characters are the same as for A. sabellii. Etymology: This species is named after Philippe Bouchet of the MNHN in recognition of his substantial contributions to Malacology and for his generosity in making the material used for this paper available to us.Published as part of Morassi, M. & Bonfitto, A., 2010, New raphitomine gastropods (Gastropoda: Conidae: Raphitominae) from the South-West Pacific, pp. 54-68 in Zootaxa 2526 on pages 63-6
Cocculinella bertolasoi Dell'Angelo & Sosso & Bonfitto 2011, n. sp.
No full text<i>Cocculinella bertolasoi</i> n. sp. (Fig. 2 G-L) <p>TYPE MATERIAL. — Holotype: MZB 45692, shell from Valanidi (Figs 2G, H, J-L). Paratype: BD, shell from Capo Milazzo (Fig. 2I).</p> <p>ETYMOLOGY. — The specific name honours our friend Luca Bertolaso (Reggio Emilia), who collected part of the material here presented and made it available to the authors.</p> <p>TYPE LOCALITY. — Valanidi, Reggio Calabria Province, Southern Italy.</p> <p>TYPE STAGE. — Lower Pleistocene.</p> <p>MEASUREMENTS. — see Table 2.</p> <p>DESCRIPTION</p> <p>Shell patelliform, up to 3.87 mm long (the holotype), thin and fragile. Aperture narrowly elliptical, ends evenly rounded, sides subparallel and very shallowly rounded, slightly convex from side to side so that only the center contacts a flat surface. Spire depressed-conical, apex slightly behind the centre, anterior slope profile slightly convex, posterior slope profile practically straight or shallowly concave, anterior and posterior slope areas regularly connected with lateral areas, posterior outline regularly rounded. Protoconch clearly demarcated, 335 µm long and 220 µm wide in the holotype, of about one whorl, tip of apical fold perfectly fused behind the apertural rim. Teleoconch with only fine collabral growth lines.</p> <p>REMARKS</p> <p> The paratype from Capo Milazzo has the same general shape as the holotype. <i>Cocculinella bertolasoi</i> n. sp. differs from <i>C. freti</i> n. sp. in general shape, more narrow and elongate in <i>C. freti</i> n. sp. (L/ W 2.91 - 3.75 in <i>C. freti</i> n. sp. vs 2.03-2.39 in <i>C. bertolasoi</i> n. sp.; W/H 0.58-0.75 in <i>C. freti</i> n. sp. vs 0.84 in <i>C. bertolasoi</i> n. sp.) and in having a more globose and larger protoconch (285 × 188 µm in <i>C. freti</i> n. sp. vs 335 × 220 µm in <i>C. bertolasoi</i> n. sp.).</p> <p> DISTRIBUTION <i>Cocculinella bertolasoi</i> n. sp. is only known from the lower Pleistocene of Valanidi (Reggio Calabria Province, Calabria) and Capo Milazzo (Messina Province, Sicily), Southern Italy.</p>Published as part of <i>Dell'Angelo, Bruno, Sosso, Maurizio & Bonfitto, Antonio, 2011, First record of Cocculinella (Mollusca, Gastropoda, Cocculiniformia) from the Lower Pleistocene of Southern Italy with the description of two new species, pp. 739-746 in Geodiversitas 33 (4)</i> on pages 742-743, DOI: 10.5252/g2011n4a9, <a href="http://zenodo.org/record/4597178">http://zenodo.org/record/4597178</a>
Acanthodaphne basicincta Morassi & Bonfitto 2010, new species
No full textAcanthodaphne basicincta new species Figures 2. J–P Type material: Holotype MNHN 22306. Paratypes: 3 MNHN 22307, 1 MZB 45714, 1 ZRC 2979. Type locality: Solomon Islands, 09°32.6’S 160°37.3’E, 283–305m [SALOMON 1 Stn CP 1786]. Material examined: only known from the type material. Description: Shell biconic (b/l 0.47–0.53; a/l 0.42–0.48), small but stout. Teleoconch consisting of 5.8 whorls, which are sharply angulated at one-quarter of whorl height on earlier spire whorls, at about one-third on later ones. Last whorl strongly excavated with a short neck. Whorls separated by a weakly impressed, strongly undulating suture margined by a prominent subsutural fold. Sutural ramp wide, strongly concave. Axial sculpture consisting of short, prominent, opisthocline ribs, separated by interspaces much wider than them, extending from lower suture to shoulder angle where they are abruptly truncated and form sharp tubercles. Axial ribs rapidly vanishing on last whorl below periphery. There are 11–13 axial ribs on penultimate whorl, 13–16 on last whorl. Subsutural fold bearing a row of tubercles more numerous than axial ribs. Sutural ramp sculptured by fine collabral threads sinuous in conformity with the anal sinus. Spiral sculpture consisting of narrow, flattened cords. Earlier spire whorls with one peripheral cord forming peripheral angulation, joined on penultimate whorl by a weaker cord anteriorly; interstice between these two cords sculptured by 1–2 very low threads. Last whorl with a third cord just below suture and a fourth prominent peribasal cord bearing tubercles; interstices between spiral cords sculptured by 2–4 threads. Remaining part of base sculptured by 2–3 widely-spaced low cords, lacking intermediaries; 8–10 threads on the neck. Under SEM, entire whorl surface is seen to be covered by dense rows of granules (fig. 2L). Aperture oblanceolate. Columella concave above, strongly twisted to left below forming a short, relatively narrow siphonal canal. Labial callus relatively thick over columella, wide, sculptured by microscopic rows of prickly nodules in its interior part. Parietal region rendered angular by the peribasal cord. Outer lip thin with a moderately deep, reversed L-shaped anal sinus; its deepest point below middle of sutural ramp. Protoconch conical of 3.25 whorls; protoconch I covered with minute, dense spiral threads rendered granulose where crossed by even finer axial threads; protoconch II subsequent part sculptured by opisthocyrt axial riblets extending from suture to suture decussate by oblique threads on lower half of each whorl. Protoconch diameter: 0.57–0.67 mm. Color white, protoconch yellowish-beige. Dimensions: Holotype 7.2 x 3.4 mm, aperture height 3.4 mm; largest Paratype: 7.7 x 3.9 mm, aperture height 3.6 mm; smallest Paratype: 6.6 x 3.5 mm, aperture height 3.1 mm. Remarks: Acanthodaphne basicincta is readily distinguished from other members of the genus Acanthodaphne in having a prominent peribasal cord and a twisted columella. Etymology: basicincta refers to the prominent peribasal cord of this species.Published as part of Morassi, M. & Bonfitto, A., 2010, New raphitomine gastropods (Gastropoda: Conidae: Raphitominae) from the South-West Pacific, pp. 54-68 in Zootaxa 2526 on pages 62-6
Iredalea adenensis Morassi & Bonfitto, 2013, sp. nov.
No full textIredalea adenensis sp. nov. Figures 1. I–K Type material. Holotype (MZB 60072) and 3 paratypes (MZB 60073); 1 paratype (MNHN-IM- 2012-2532). Type locality. Offshore Gulf of Aden, trawled by local fishermen at 200–400 m in 1994. Material examined. The type material. Description. Shell rather solid (fig. I–J), narrowly claviform (b/l 0.43–0.45; a/l 0.39–0.46) with high, acute spire and short base. Protoconch somewhat conical of 1 ¾ whorls. Protoconch diameter: 0.75 mm (holotype). Teleoconch of up to 7 whorls with slight, rounded shoulder at about mid-whorl height, sutural ramp concave, suture shallow. Sculpture of numerous, narrow axial ribs (fig. K), as broad as interspaces, opisthocline with a prosocline inflexion on sutural ramp; sixteen to 17 axial ribs on antepenultimate and penultimate whorl, 17–18 on last whorl. Adapical part of whorl surface sculptured on last two whorls by indistinct spiral lines; 7–8 spiral grooves, with a tendency to form rectangular granules where crossing axial ribs, on the rostrum. Aperture oblong-ovate, columella relatively straight with a moderately thick callus, its outer edge slightly raised; parietal region concave, parietal pad filling posterior angle of aperture, constricting anal sinus. Siphonal canal short, broad, slightly obliquely notched. Outer lip with a distinct stromboid notch in the abapical part, almost straight in lateral view, with a cutting edge. Anal sinus moderately deep, openly and asymmetrically U-shaped, directed slightly adapically. Color yellowishwhite with a single brown band margining abapical suture on penultimate whorl, occupying the median zone on the last whorl; columella and protoconch white. Dimensions: Holotype: 17.2 x 7.7 mm, aperture height 6.8 mm; largest paratype (MZB): 20.2 x 9.1 mm, aperture height 9.3 mm; smallest paratype (MZB): 14.7 x 6.4 mm, aperture height 6.6 mm. Etymology. adenensis, alluding to the fact that the new species is described from the Gulf of Aden. Remarks. This new species represents the first record of the genus Iredalea from the Gulf of Aden. Kilburn (1988) reported two Iredalea species from southern Africa, namely Iredalea inclinata (Sowerby, 1893) and I. exilis (Pease, 1868). Iredalea adenensis sp. nov. is comparable in size to I. inclinata, reported from Mauritius and Reunion Island to Natal, but has more numerous axial ribs (16–18 versus 12–15 on later two teleoconch whorls), higher periphery (median rather than at about abapical third of whorl), fewer protoconch whorls (1 ¾ versus 2 ½), deeper anal sinus and very different colour pattern. In particular, I. adenensis has a yellowish-white shell with a single brown band margining abapical suture on penultimate whorl occupying the median zone on the last whorl, while the shell of I. inclinata is patterned with deep brown forming three bands on last whorl (Kilburn, 1988: 187). Weinkauff in Weinkauff & Kobelt, 1876 described Pleurotoma polygonalis from Zanzibar which, according to Kilburn (1988: 187), may prove to be an earlier name for Iredalea inclinata. The shell of Pleurotoma polygonalis was described as “ albida, zonis fuscis picta ” with “ flavidulo bifasciata ” aperture (page 100, pl. 21 figs 7,9). As remarked by Kilburn (1988), the original figure of Pleurotoma polygonalis is rather indistinct but the drawing in lateral view clearly shows two brown bands at level of aperture, thus differing from Iredalea adenensis which has a single brown band. Apart from the presence of spiral bands, the shell of I. adenensis is yellowish-white while that of P. polygonalis is patterned with brown (“ zonis fuscis picta ”). The new species resembles I. exilis Pease, 1860 reported from Polynesia to southern Africa, in possessing a brown band in the median zone of last whorl but otherwise differs mainly in its much larger shell (up to mm 20 mm versus 8 mm or less), shape (claviform rather than pupoid) and in possessing a paucispiral protoconch (1 ¾ versus about 4 whorls).Published as part of Morassi, Mauro & Bonfitto, Antonio, 2013, Four new African turriform gastropods (Mollusca: Conoidea), pp. 271-280 in Zootaxa 3710 (3) on page 274, DOI: 10.11646/zootaxa.3710.3.5, http://zenodo.org/record/22015
Cocculinella freti Dell'Angelo & Sosso & Bonfitto 2011, n. sp.
No full text<i>Cocculinella freti</i> n. sp. (Fig. 2 A-F) <p>TYPE MATERIAL. — Holotype: MZB 45691, shell from Archi (Fig. 2A, B, D-F). Paratype: BD, shell from Valanidi (Fig. 2C).</p> <p> ETYMOLOGY. — From the latin world “ <i>fretum</i> ”, “strait” (of Messina), alluding to the occurrence at two outcrops near the Calabrian coast of the Messina Strait.</p> <p>TYPE LOCALITY AND HORIZON. — Archi, Reggio Calabria Province, Southern Italy, Lower Pleistocene.</p> <p>MEASUREMENTS. — see Table 1.</p> <p>DESCRIPTION</p> <p>Shell patelliform, up to 5.21 mm long (3.03 mm the holotype), thin and fragile. Aperture narrowly elliptical, ends evenly rounded, sides subparallel and very shallowly rounded, slightly convex from side to side so that only the center contacts a flat surface. Spire depressed-conical, apex slightly behind the centre, anterior slope profile slightly convex, posterior slope profile shallowly concave, anterior and posterior slope areas regularly connected with lateral areas, posterior outline subangular. Protoconch clearly demarcated, 285 µm long and 188 µm wide in the holotype, of about one whorl, tip of apical fold perfectly fused behind the apertural rim. Teleoconch with only fine collabral growth lines.</p> <p>REMARKS</p> <p>The paratype from Valanidi has the same narrow and elongate general shape as the holotype. The protoconch is partially eroded, so it was possible only to measure the length, 310 µm, which is closely accordant with that of the holotype (285 µm).</p> <p> DISTRIBUTION <i>Cocculinella freti</i> n. sp. is only known from the lower Pleistocene of Archi and Valanidi, Reggio Calabria Province, Southern Italy.</p>Published as part of <i>Dell'Angelo, Bruno, Sosso, Maurizio & Bonfitto, Antonio, 2011, First record of Cocculinella (Mollusca, Gastropoda, Cocculiniformia) from the Lower Pleistocene of Southern Italy with the description of two new species, pp. 739-746 in Geodiversitas 33 (4)</i> on page 742, DOI: 10.5252/g2011n4a9, <a href="http://zenodo.org/record/4597178">http://zenodo.org/record/4597178</a>
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