Spergo

Spergo is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae.[1]

Spergo
Shell of Spergo fusiformis
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Superfamily: Conoidea
Family: Raphitomidae
Genus: Spergo
Dall, 1895
Type species
Mangilia glandiniformis
Dall, 1895
Species

See text

Synonyms[1]

Speoides Kuroda & Habe, 1961

Description

The large, thin shell is nearly destitute of sculpture. It shows an unrecurved columella, a short, wide, straight siphonal canal, a wide shallow emargination representing the anal notch, and generally feeble anal fasciole, except in the very young. There is a sharp outer lip, unarmed aperture, and a sinusigera protoconch.

The animal has a muzzle formed by a stout squarely truncated rostrum opening into a capacious pharynx, provided internally with a degenerate proboscis not capable of extrusion beyond the oral orifice, with a poison gland and a degenerate radula. Eyes are present and functional. The tentacles are low-seated, stout, and clavate. The operculum is absent. The dentition resembles that of Bela.

This form resembles Pleurotomella, Verrill, from which it differs in the character of the rostrum and pharynx, in the possession of eyes, in its straight wide siphonal canal, and in having a feebler type of verge, anal notch and fasciole.[2]

Species

Species within the genus Spergo include:

Species brought into synonymy
  • Spergo glandiformis (Dall, 1895): synonym of Spergo glandiniformis (Dall, 1895) (misspelling)
  • Spergo sibogae Schepman, 1913: synonym of Gymnobela sibogae (Schepman, 1913) (original combination)

References
  1. Spergo Dall, 1895. Retrieved through: World Register of Marine Species on 14 April 2010.
  2. W.H. Dall, Report on the Mollusca and Brachiopoda dredged in deep water, chiefly near the Hawaiian Islands, with illustrations of hitherto unfigured species from Northwest America; Proceedings of the United States National Museum. vol. 17 (1895) This article incorporates text from this source, which is in the public domain.
  3. Spergo aithorrhis Sysoev & Bouchet, 2001. Retrieved through: World Register of Marine Species on 14 April 2010.
  4. Spergo fusiforme (Habe, 1962). Retrieved through: World Register of Marine Species on 14 April 2010.
  5. Spergo glandiniformis (Dall, 1895). Retrieved through: World Register of Marine Species on 14 April 2010.
  6. Spergo nipponensis Okutani & Iwahori, 1992. Retrieved through: World Register of Marine Species on 14 April 2010.
  • Bouchet P. & Rocroi J.-P. (2010). Nomenclator of Molluscan Supraspecific Names.
  • Bouchet, P.; Kantor, Y. I.; Sysoev, A.; Puillandre, N. (2011). A new operational classification of the Conoidea (Gastropoda). Journal of Molluscan Studies. 77(3): 273-308
  • Tucker, J.K. (2004). "Catalog of recent and fossil turrids (Mollusca: Gastropoda)" (PDF). Zootaxa. 682: 1–1295.
  • Worldwide Mollusc Species Data Base: Raphitomidae
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