131,339 research outputs found
Exiloberingius Mclean & Clark 2023, n. gen.
No full text<i>Genus Exiloberingius</i> n. gen. <p>urn:lsid:zoobank.org:act: 22EAA94C-CE59-4729-86BF-39B49BF46D57</p> <p> <b>Diagnosis:</b> shell pyriform, canal short, shell extremely thin, fragile, reinforced with thicker interior deposition along the columella and final lip; periostracum fibrous in thick axial ridges below suture; axial and spiral sculpture weak or lacking.</p> <p> <b>Type species:</b> <i>Exiloberingius fragilis</i> McLean & Clark, <b>n. sp.</b> (HD).</p> <p> <b>Remarks:</b> differs from all other Beringiinae by the excessively thin, poorly calcified shell, and the thick, fibrous periostracum. One Aleutian species.</p>Published as part of <i>Mclean, James H. & Clark, Roger N., 2023, Seven new genera and thirty-four new species of buccinoid gastropods (Neogastropoda: Buccinidae) from the Aleutian Islands, Alaska, pp. 151-201 in Zootaxa 5351 (2)</i> on page 172, DOI: 10.11646/zootaxa.5351.2.1, <a href="http://zenodo.org/record/8391375">http://zenodo.org/record/8391375</a>
Rhombipoma Mclean 2012, n. gen.
No full textGenus Rhombipoma n. gen. TYPE SPECIES. — Rhombipoma rowleyana n. sp. DIAGNOSIS. — Whorl profile low, rounded; with whorl expansion to make final quarter whorl more projecting, sculpture of about 22 axial ribs; axial ribs absent in on final ∕₆ whorl, replaced by more prominent lamellae (lamellae not evident on earlier whorls); the final prominent lamellae continue to form the final lip; spiral sculpture of two beaded cords at periphery; lip very strongly projecting, of eight projecting axial lamellae. DISTRIBUTION. — Known only from type species, from shallow sublittoral depths, Rowley Shoals, off northwestern Western Australia. REMARKS This genus is comparable to Depressipoma n. gen. in its small size and low profile, differing in having a rounded, rather than carinate periphery, and in having reduced spiral sculpture on the shoulder and base, compared to that of Depressipoma n. gen. and Liotipoma. Whorl expansion is most extreme for all members of the subfamily. The final lip is more projecting than in species of Liotipoma and Depressipoma n. gen., and the lamellae of the projecting lip are larger and fewer, matched in prominence by the lamellae that precede the final lip.Published as part of Mclean, James Hamilton, 2012, New species and genera of colloniids from Indo-Pacific coral reefs, with the definition of a new subfamily Liotipomatinae n. subfam. (Turbinoidea, Colloniidae), pp. 343-376 in Zoosystema 34 (2) on page 370, DOI: 10.5252/z2012n2a10, http://zenodo.org/record/516546
Crebrivolutopsius Mclean & Clark 2023, n. gen.
No full textGenus <i>Crebrivolutopsius</i> n. gen. <p>urn:lsid:zoobank.org:act: D76787CE-EE47-4CF2-A8BD-6441C5679776</p> <p> <b>Description:</b> Profile high, suture moderately impressed; sculpture of strongly projecting spiral cords, with deeply channeled interspaces along upper part of whorl, of broad flattened spiral cords with fine interspaces below periphery, columellar callus narrow; outer lip with numerous prominent teeth along lower margin. Radula with curved rachidian tooth with four subequal cusps; lateral teeth with three cusps.</p> <p> <b>Type species:</b> <i>C</i>. <b>labidentatus</b> <b>n. sp.</b> (HD)</p> <p> <b>Remarks:</b> <i>Crebrivolutopsius</i> shows some anomalous characters that resemble those of the subfamily Neptuneinae, namely the comparatively small nucleus and the tricuspid lateral teeth, but the form and proportions of the shell is Volutopsiinae, so it is provisionally placed in the later subfamily.</p>Published as part of <i>Mclean, James H. & Clark, Roger N., 2023, Seven new genera and thirty-four new species of buccinoid gastropods (Neogastropoda: Buccinidae) from the Aleutian Islands, Alaska, pp. 151-201 in Zootaxa 5351 (2)</i> on page 189, DOI: 10.11646/zootaxa.5351.2.1, <a href="http://zenodo.org/record/8391375">http://zenodo.org/record/8391375</a>
Boreancistrolepis Mclean & Clark 2023, n. gen.
No full textGenus <i>Boreancistrolepis</i> n. gen. <p>urn:lsid:zoobank.org:act: 4CD580A0-A245-4042-9E5B-F376E2D92D70</p> <p> <b>Diagnosis:</b> Profile tall, whorls rounded, with rounded, narrow shoulder; suture deeply impressed; periostracum thin, shiny, closely adherent, lip extending anterior to base of pillar; sculpture faint or absent; color pattern green, two tone, base lighter; operculum large, filling aperture, outer surface strongly convex, glossy with terminal nucleus. Radula: Rachidian and lateral teeth each with three sharply pointed cusps.</p> <p> <b> Type species: <i>Boreancistrolepis excelsus</i> n. sp.</b> (HD).</p> <p> <b>Remarks:</b> Differs from other Parancistrolepidinae, particularly the rather similar <i>Neancistrolepis</i> Habe & Sato, 1973, by its thick, solid, nearly smooth shell with a tenacious, glossy periostracum and large operculum with, glossy, convex exterior, which completely fills the aperture. One Aleutian species.</p>Published as part of <i>Mclean, James H. & Clark, Roger N., 2023, Seven new genera and thirty-four new species of buccinoid gastropods (Neogastropoda: Buccinidae) from the Aleutian Islands, Alaska, pp. 151-201 in Zootaxa 5351 (2)</i> on page 156, DOI: 10.11646/zootaxa.5351.2.1, <a href="http://zenodo.org/record/8391375">http://zenodo.org/record/8391375</a>
Aleutibuccinum Mclean & Clark 2023, n. gen.
No full textGenus <i>Aleutibuccinum</i> n. gen. <p>Figures 20 A–E urn:lsid:zoobank.org:act: 4FFF4DE6-E1F3-4DCF-A324-1814FB1C113F</p> <p> <b>Type species:</b> <i>Bathybuccinum clarki</i> Kantor & Harasewych, 1998 (<b>n. comb.</b>)</p> <p> <b>Description:</b> Medium size (height to 7 cm); Profile high, whorls rounded to angulate; spiral sculpture of fine lirae, axial sculpture absent; mature lip slightly flared; operculum sub-triangular with lateral nucleus.</p> <p> <b>Remarks:</b> Kantor & Harasewych (1998) Originally placed <i>Aleutibuccinum clarki</i> in the genus <i>Bathybuccinum</i> (Golikov & Sirenko, 1988) subgenus <i>Ovulatibuccinum</i> (Golikov & Sirenko, 1988) but it is clearly distinct from both of these groups. The unique operculum sets this genus apart from all other North Pacific Buccininae. At present, the <i>Aleutibuccinum clarki</i> is the only species assigned to this genus.</p>Published as part of <i>Mclean, James H. & Clark, Roger N., 2023, Seven new genera and thirty-four new species of buccinoid gastropods (Neogastropoda: Buccinidae) from the Aleutian Islands, Alaska, pp. 151-201 in Zootaxa 5351 (2)</i> on page 193, DOI: 10.11646/zootaxa.5351.2.1, <a href="http://zenodo.org/record/8391375">http://zenodo.org/record/8391375</a>
Depressipoma Mclean 2012, n. gen.
No full textGenus <i>Depressipoma</i> n. gen. <p> TYPE SPECIES. — <i>Depressipoma laddi</i> n. sp.</p> <p>DIAGNOSIS. — Profile low with strong peripheral angulation midway on whorl, maximum diameter 3.3 mm; whorls rounded above and below peripheral carination, shoulder and base with narrow spiral cords, axial sculpture of narrow, projecting ribs; umbilical area broad, with deposition of callus to strengthen shell; final lip broad and projecting, composed of successive layers of fine lamellae; base of lip with short triangular tongue.</p> <p>DISTRIBUTION. — Marshall Islands, Micronesia, west of the international date line and just north of the Equator.</p> <p>REMARKS</p> <p> Two species resemble <i>Liotipoma</i> in sculpture, have a similar aperture and lip with the projecting tongue, but have such a low profile that there would be no possibility to form a brood chamber within the umbilical cavity.The specimen of <i>D.laddi</i> n. sp. shows a lumpy deposition of callus across the umbilical area, which serves to strengthen the shell in the position at which its weak early stage would need fortification. The specimen of <i>D. kwajaleina</i> n. sp. is in poor condition with agglutinated sand obscuring what is probably the same feature in the umbilical cavity.</p>Published as part of <i>Mclean, James Hamilton, 2012, New species and genera of colloniids from Indo-Pacific coral reefs, with the definition of a new subfamily Liotipomatinae n. subfam. (Turbinoidea, Colloniidae), pp. 343-376 in Zoosystema 34 (2)</i> on page 368, DOI: 10.5252/z2012n2a10, <a href="http://zenodo.org/record/5165469">http://zenodo.org/record/5165469</a>
Mclean, N C, QX9250
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/403959Surname: MCLEAN. Given Name(s) or Initials: N C. Military Service Number or Last Known Location: QX9250. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 26870.240011
Item: [2016.0049.36251] "Mclean, N C, QX9250
Mclean, H N, VX50679
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/403973Surname: MCLEAN. Given Name(s) or Initials: H N. Military Service Number or Last Known Location: VX50679. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 40794.240034
Item: [2016.0049.36265] "Mclean, H N, VX50679
Castaneobuccinum orri Mclean & Clark 2023, n. sp.
No full text<i>Castaneobuccinum orri</i> n. sp. <p>Figures: 21 A–C urn:lsid:zoobank.org:act: B22E8952-8D0E-4E9B-AF87-EC4A05D62959</p> <p> <b>Type locality:</b> N of Cape Shaw, NE side of Atka Island, Andreanof Ids., Aleutian Is., Alaska (52°22.55 N, 173°58.60 W), 80 m. (Rae Baxter, sta. 86–317).</p> <p> <b>Type material:</b> Holotype, LACM 3590 (<i>leg.</i> Rae Baxter, 6 August, 1986). 53.8 mm; Paratypes: Pt 1, SBMNH 169017, 56.5mm, Adak Island, Andreanof Ids. (51°45.35 N, 176°25.43 W), 11 m (AKALE07-A0021); Pt 2, RNC 4554, 61.0 mm. Adak Island, Andreanof Ids. (51°45.35 N, 176°25.43 W), 11 m (AKALE07-A0021).</p> <p> <b>Referred material:</b> 1, RNC 4219, 43.3 mm. Petrel Bank (52°04.15 N, 179°41.63 E), 74 m (NMFS 143-201001 - 146); 1, RNC 4072, 10.5 mm. W of Tanaga Island (51°44.5 N, 178°07.68 W), 95 m (NMFS 23-199701 - 137); 1, RNC 4023, 54.6 mm. S of Atka Island (51°52.62 N, 174°33.61 W), 147 m (NMFS 23-199701 - 95).</p> <p> <b>Description:</b> Shell moderately large (to 61 mm, RNC 4554), sturdy, tall spired; chestnut brown. Protoconch with 2.5 whorls; teleconch with five or six whorls, suture well impressed; axial sculpture lacking; spiral sculpture consisting of a single (often nodulose) mid-whorl cord, beginning as a carination, in the early teleconch, and numerous fine spiral incisions. Aperture large, oval, much less than half of shell height. Outer lip inflated, heavily reinforced, forming broad shallow sinus on upper part of whorl; canal very short, broad.</p> <p>Radula: Rachidian tooth broad, rectangular, bearing five spaced, equal length cusps; Lateral teeth tricuspid, outer cusp large, heavy, strongly curved, inner small, slender, only slightly curved, outer cusp much larger than inner one, slightly curved.</p> <p> <b>Remarks:</b> The single broad spiral cord separates this species from all of its congeners.</p> <p> <b>Etymology:</b> The name honors Dr. James W. Orr, Ichthyologist, Alaska Fisheries Science Center (retired) for his many years of assistance in securing mollusk specimens from NOAA/NMFS Alaska trawl surveys.</p> <p> <b>Distribution:</b> Central Aleutians, Andreanof Ids., where it has been found from Atka Island (174°W) to Tanaga Island (178°W), at depths of 15– 147 m.</p> <p> <b>Habitat:</b> Cobble and sand bottoms, at temperatures of 5.1–6°C.</p>Published as part of <i>Mclean, James H. & Clark, Roger N., 2023, Seven new genera and thirty-four new species of buccinoid gastropods (Neogastropoda: Buccinidae) from the Aleutian Islands, Alaska, pp. 151-201 in Zootaxa 5351 (2)</i> on pages 193-194, DOI: 10.11646/zootaxa.5351.2.1, <a href="http://zenodo.org/record/8391375">http://zenodo.org/record/8391375</a>
Neptunea dominator Mclean & Clark 2023, n. sp.
No full text<i>Neptunea dominator</i> n. sp. <p>Figures 15 G–J</p> <p>urn:lsid:zoobank.org:act: B167B455-40EA-4FEE-9865-DFBE9DDEC353</p> <p> <b>Type locality:</b> Petrel Bank, NE of Semisopochnoi Island, Rat Ids., Aleutian Is., Alaska (54°02.8 N, 179°47.4 W); 256 m (NMFS 23-199701 - 169).</p> <p> <b>Type material:</b> Holotype: LACM 3582, 111.6 mm. (<i>leg.</i> RNC, 11 July, 1997, trawled, R/V <i>Dominator</i>). Paratypes: Pt 1, LACM 3630, 120.7 mm. N of Amlia Island, Andreanof Ids. (52º33.74 N, 173º17.97 W), 219 m (94- 199401-70); Pt 2, RNC 4621, 51.3 mm. SW of Buldir Island (52°18.5 N, 175°59.0 E), 325 m (NMFS 23-199701 - 243).</p> <p> <b>Referred material:</b> 1, RNC 3904, 135.1 mm. N of Amlia Island, Andreanof Ids. (52°31.24 N, 173°28.65 W), 224 m (NMFS 143-201001 - 47); 1, RNC 4673, 89.0 mm. SW of Tanaga Island, Andreanof Ids. (51°29.3 N, 178°31.5 W), 210 m (176-201601-242).</p> <p> <b>Description:</b> Shell moderately large (to 135 mm, RNC 3904), fusiform, white, marked with brown on base and ribs; periostracum lacking; Whorls rounded, suture moderately impressed. Protoconch large, 6.4 mm in diameter, bulbous, projecting, with two whorls; five teleconch whorls, first teleconch whorl rounded, smooth, second teleconch whorl vertically compressed, with five or six even spiral cords. Spiral sculpture of five to seven, rounded, even cords interspaces broader than cords, bearing three to five fine lirae;12–14 cords of lesser strength and more crowded on base. Axial sculpture lacking. Mature lip slightly thickened, scarcely flaring, canal of moderate length, pillar with well-developed siphonal fasciole.</p> <p>Radula: Somewhat atypical for genus. Rachidian tooth broadly quadrate, strongly indented anteriorly, anteriolateral edges rounded, bearing three short, stout, equal-sized cusps. Lateral teeth long, thick, bearing four cusps rather than the normal three; cusps well-spaced, outer cusp much longer than others, strongly curved, inner cusp about 2/3 as large as outer one, moderately curved; two central cusps much smaller, about half the size of inner cusp, inner one slightly larger than outer one.</p> <p> <b>Remarks:</b> Differs from <i> Neptunea <b>baxteri</b></i> n. sp., by 1) a taller, more slender profile and 2) fewer primary spiral cords, with broader interspaces bearing several fine lirae, and 3) in the details of the radular teeth.</p> <p> <b>Etymology:</b> Named for the NMFS chartered fishing vessel <i>Dominator</i> that collected the holotype.</p> <p> <b>Distribution:</b> Central and western Aleutians from SW of Buldir Island (175°49 E) to near Amlia Island, Andreanof Ids. (173°28 W), at depths of 210– 325 m.</p> <p> <b>Habitat:</b> Found on black sand and cobble bottoms at temperatures of 3.2°C–5.2°C.</p>Published as part of <i>Mclean, James H. & Clark, Roger N., 2023, Seven new genera and thirty-four new species of buccinoid gastropods (Neogastropoda: Buccinidae) from the Aleutian Islands, Alaska, pp. 151-201 in Zootaxa 5351 (2)</i> on pages 179-180, DOI: 10.11646/zootaxa.5351.2.1, <a href="http://zenodo.org/record/8391375">http://zenodo.org/record/8391375</a>
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