Belomitra pacifica
Creators: name: Kantor, Yuri I.
name: Puillandre, Nicolas
name: Rivasseau, Audrey
name: Bouchet, Philippe
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Belomitridae
Belomitra
Belomitra pacifica

description: <i>Belomitra pacifica</i> (Dall, 1908) Figures 4C–E, 6 <i>Leucosyrinx?</i> <i>pacifica</i> Dall 1908: 213, 270, pl. 12, fig. 3. <i>Irenosyrinx pacifica</i> (Dall, 1908) — Dall 1921: 69; Oldroyd 1927: 67. <i>Morrisonella pacifica</i> (Dall, 1908) — Bartsch 1945: 23, figs 11–14. <i>Steiraxis</i> (<i>Irenosyrinx</i>) <i>pacifica</i> (Dall, 1908) — Clarke 1962: 28. <i>Aforia pacifica</i> (Dall, 1908) — Abbott 1974: 265. <i>Belomitra pacifica</i> (Dall, 1908) — Bouchet and Warén 1986: 473 (part.), fig. 73 (holotype illustrated). <b>Type material:</b> Holotype USNM 122590. <b>Type locality:</b> Northeastern Pacific, SW off Sitka, Aleutian Is, 55º20’N, 136º20’W, 2860 m. [<i>Albatross</i> sta. 2859] (Fig. 6). <b>Remarks:</b> Based on limited material, Bouchet and Warén (1986) treated <i>B. pacifica</i> as a very broadly distributed and highly variable species, and included in its synonymy <i>Surcula brachytoma</i> Schepman, 1913 and <i>Mangelia paschalis</i> Thiele, 1925. Based on our newer understanding of variation in species of <i>Belomitra</i> well represented in our material, this synonymy is rejected here, and we presently hypothesize that <i>B. pacifica</i> is a valid species restricted to the North Pacific. The species differs from other <i>Belomitra</i> by having a very weak axial sculpture, present only on upper whorls. The radula was prepared and illustrated by Bartsch (1945), and this was the basis for his establishing the new genus <i>Morrisonella</i>. We re-examined Bartsch's radula preparation and confirmed that it is typical for <i>Belomitra</i> with tricuspid rachidian teeth and typical very long bicuspid lateral teeth.
description: Published as part of <i>Kantor, Yuri I., Puillandre, Nicolas, Rivasseau, Audrey &amp; Bouchet, Philippe, 2012, 3496, pp. 1-64 in Zootaxa 3496</i> on pages 16-17
description: {"references": ["Dall, W. H. (1908) Reports on the dredging operations off the west coast of Central America to the Galapagos, to the west coast of Mexico, and the Gulf of California, in charge of Alexander Agassiz, carried on by the U. S. S. \" Albatross \", during 1891 (\u2026). Part 14. The Mollusca and Brachiopoda. Bulletin of the Museum of Comparative Zoology, 43 (6), 205 - 487, pls. 1 - 22.", "Dall, W. H. (1921) Summary of the marine shellbearing mollusks of the northwest coast of America, from San Diego, California, to the Polar Sea, mostly contained in the collection of the U. S. National Museum, with illustration of hitherto unfigured species. Bulletin of the United States National Museum, 112, 1 - 217, 22 pls.", "Oldroyd, I. S. (1927) The marine shells of the west coast of North America, vol. 2 (1). Stanford: Stanford University Press, 297 pp., 29 pls.", "Bartsch, P. (1945) Morrisonella, a new genus of East Pacific deep water molluscs. Nautilus, 59, 23.", "Clarke, A. H. (1962) Annotated list and bibliography of the abyssal marine molluscs of the world. National Museum of Canada, Bulletin, 181, 1 - 114.", "Abbott, R. T. (1974) American Seashells, 2 nd ed. New York: Van Nostrand Reinhold, 663 pp.", "Bouchet, P. &amp; Waren, A. (1986) Mollusca Gastropoda: Taxonomical notes on tropical deep water Buccinidae with description of new taxa. In: Resultats des Campagnes MUSORSTOM. I &amp; II. Philippines, tome 2. Memoires du Museum national d'Histoire naturelle, Ser. A., Zoologie, pp. 457 - 499.", "Schepman, M. M. (1913) The Prosobranchia of the Siboga Expedition - Part V Toxoglossa. Siboga Expeditie Monographie, 49, 365 - 452, pls 25 - 30.", "Thiele, J. (1925) Gastropoda der Deutschen Tiefsee - Expedition. II. Teil .. Wissenschaftliche Ergebnisse der Deutschen Tiefsee - Expedition auf dem Dampfer \" Valdivia \" 1898 - 1899, 17 (2), 1 - 348 [35 - 382], pls. 1 - 34 [13 - 46]. Gustav Fischer, Jena."]}