Asperdaphne walcotae

Description

The length of the shell attains 20 mm, its diameter 10 mm.

(Original description in Latin) The turreted shell is relatively short, rough, and pale. It is marked anteriorly by a pale purple band. The spire itself is turreted, sharp, and graduated The suture is inconspicuous. It consists of eight whorls that are spirally striated throughout. Each whorl is angled above its middle, convex below the angle, and features longitudinal ribs (approximately 12 on the body whorl). It is also marked by spiral ridges (four on the penultimate whorl). The body whorl is nearly equal in height to the spire. It is slightly convex below the angle, and contracts towards the base, terminating in a short beak. The aperture is rather wide and has a purple-gray throat. The siphonal canal is very short and slightly curved backward. The columella is relatively straight, and the outer lip is sharp and finely crenulated, featuring a deep, fairly wide sinus at the top.

Distribution

This marine species is endemic to Australia and occurs in the waters off the coast of South Australia.

References

• Powell, A.W.B. 1966. The molluscan families Speightiidae and Turridae, an evaluation of the valid taxa, both Recent and fossil, with list of characteristic species. Bulletin of the Auckland Institute and Museum. Auckland, New Zealand 5: 1–184, pls 1–23

References

1. {{WRMS species. 433072. ''Asperdaphne walcotae'' (G.B. Sowerby III, 1893). 5 April 2010
2. [https://www.biodiversitylibrary.org/page/30981554 Sowerby, G.B. (3rd) 1893. ''Descriptions of fifteen new species of shells of the family Pleurotomidae.'' Proceedings of the Zoological Society of London 1893: 487–492] {{source-attribution