Gymnobela brachis

Gymnobela brachis is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.[1]

Gymnobela brachis
Original image of a shell of Gymnobela brachis
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Clade:	Caenogastropoda
Clade:	Hypsogastropoda
Clade:	Neogastropoda
Superfamily:	Conoidea
Family:	Raphitomidae
Genus:	Gymnobela
Species:	G. brachis
Binomial name
Gymnobela brachis (Dall, 1919)
Synonyms[1]
Lora brachis Dall, 1919

Description

The length of the shell attains 4.5 mm, its diameter 3.3 mm.

(Original description) The small, short, stout, blunt shell contains about 4½ whorls. The anal fasciole slopes toward a carinate beaded shoulder, retractively wrinkled between the distinct suture and a nearly median thread. The axial sculpture consists of (on the body whorl about 30) small, narrow, protractive equal ribs with subequal interspaces, obsolete on the base, each beginning at a bead on the carina. The spiral sculpture consists of fine sharp equal and equidistant striae covering the shell in front of the carina, cutting minutely the summits of the ribs, with wider flattish interspaces. The aperture is rather wide and simple. The siphonal canal is short, deep and recurved.[2]

Distribution

This marine species occurs off the Galapagos Islands.

References

1. Gymnobela brachis (Dall, 1919). Retrieved through: World Register of Marine Species on 29 March 2010.
2. Dall (1919) Descriptions of new species of Mollusca from the North Pacific Ocean; Proceedings of the U.S. National Museum, vol. 56 (1920) This article incorporates text from this source, which is in the public domain.

External links

• Tucker, J.K. (2004). "Catalog of recent and fossil turrids (Mollusca: Gastropoda)" (PDF). Zootaxa. 682: 1–1295.