Benthofascis sarcinula
Creators: name: Tucker, J. K.
name: Tenorio, M. J.
name: Stahlschmidt, P.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Conorbidae
Benthofascis
Benthofascis sarcinula

description: <i>Benthofascis sarcinula</i> (Hedley, 1905) Figures 1, G–N <b>Type material.</b> Holotype is AMS C.19871, shell length 7 mm, shell width 4 mm. <b>Type locality.</b> 111 fm, 12.5 miles E of Cape Byron, New South Wales, Australia <b>Other specimens.</b> AMS C.372578 1 specimen from 73–91 m, off Bittangabee Bay, New South Wales, 37º13'S, 150º2'E; AMS C.372572 1 specimen from 26 m, N. Collaroy, off Long Reef, Sydney, New South Wales, 33º45'S, 151º19'E; USNM 902893, 2 specimens from Victoria, Australia; USNM 902892, 1 specimen from Lakes Entrance, Gippsland Lakes, Victoria, Australia. <b>Range.</b> New South Wales and Victoria, Australia. <b>Description.</b> Shell small, solid, ovate-fusiform. Color, pale yellow, with a rusty tinge at the suture. Whorls, three and a half, including a protoconch of one flat whorl. Sculpture, on the protoconch fine spiral grooves, continued on the adult as broad, shallow furrows, which are broadest at the suture becoming smaller and closer anteriorly. On the last whorl are twenty-two spiral ribs, on the penultimate six; the latter are latticed by fine radial riblets. The whole shell is crossed by fine arcuate growth lines. Aperture narrow, sinus deep, lip thin, straight, produced medially, edges crenulated by the sculpture. No callus on the inner lip. Columella broad and twisted; canal not produced. Length, 7 mm, breadth, 4 mm. (quoted from Hedley 1905, p. 53–54). The inner whorls are resorbed (Fig. 1N). The radula and operculum is not known. <b>Discussion.</b> The species was described from a juvenile specimen only 7 mm long (Figs. 1G &amp; H). Hedley was not certain about its generic identity having moved it from <i>Bathytoma</i> Harris &amp; Burrows, 1891 to <i>Apaturris</i> Iredale, 1917 (Hedley 1918) and later to <i>Teleocheilus</i> Harris, 1897 (Hedley 1922). Cotton (1947) placed it in <i>Benthofascis</i>. Laseron (1954) left the species in <i>Benthofascis</i>. We examined three larger specimens identifiable as <i>B. sarcinula</i> (shell length 16.6 mm to 24.7 mm) in the collections of USNM (Figs. 1I–N). The morphology of their protoconchs (Fig. 1K), the resorbed inner whorls (Fig. 1N) and the rounded biconic shell shape (Figs. 1L &amp; M) demonstrate that the species is a <i>Benthofascis</i>. The species is closest to <i>Benthofascis conorbioides</i> (Figs. 3A–D) in shell shape but most similar to <i>B. pseudobiconica</i> (Figs. 2E–K) in morphology of the early teleoconch whorls. Both <i>B. conorbioides</i> and <i>B. sarcinula</i> have distinctly convex sides. The sutural ramps of early teleoconch whorls of all three species have axials and spirals equal in size. However, <i>B. sarcinula</i> has more numerous spirals (6+) than do <i>B. conorbioides</i> and <i>B. pseudobiconica</i> (3–4 spirals) on the sutural ramps of the first few teleoconch whorls. We conclude that <i>B. sarcinula</i> is a valid species of <i>Benthofascis</i> not conspecific with any of the other species.
description: Published as part of <i>Tucker, J. K., Tenorio, M. J. &amp; Stahlschmidt, P., 2011, The genus Benthofascis (Gastropoda: Conoidea): A revision with descriptions of new species, pp. 1-14 in Zootaxa 2796 (1)</i> on pages 5-6, DOI: 10.11646/zootaxa.2796.1.1, http://zenodo.org/record/5290155
description: {"references": ["Hedley, C. (1905) Mollusca from one hundred and eleven fathoms, east of Cape Byron, New South Wales. Records of the Australian Museum, 6, 41 - 54.", "Harris, G. F. &amp; Burrows, H. W. (1891) The Eocene and Oligocene Beds of the Paris Basin. Geological Association of London, London, viii + 129 pp.", "Iredale, T. (1917) More molluscan name-changes, generic and specific. Journal of Molluscan Studies, 12, 322 - 330.", "Hedley, C. (1918) A checklist of the marine fauna of New South Wales. Part 1. Mollusca. Journal and Proceedings of the Royal Society of New South Wales, 51 Supplement 1, M 1 - M 120.", "Harris, G. F. (1897) Catalogue of Tertiary Mollusca in the Department of Geology, British Museum (Natural History). Part I. The Australasian Tertiary Mollusca. British Museum (Natural History), London, xxvi + 406 pp., 6 pls.", "Hedley, C. (1922) A revision of the Australian Turridae. Records of the Australian Museum, 13, 213 - 359, pls. 42 - 56.", "Cotton, B. C. (1947) Australian Recent and Tertiary Turridae. Field Naturalist's Section of the Royal Society of South Australia Conchology Club Publication, 4, 1 - 34.", "Laseron, C. F. (1954) Revision of the New South Wales Turridae. Royal Zoological Society of New South Wales Australian Zoological Handbook. Royal Zoological Society of New South Wales, Sydney, 56 pp., 12 pls."]}