''Daphnella interrupta'' is a species of

sea snail Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...

, a marine

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk in the family

Raphitomidae Raphitomidae is a family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.Bouchet P. & Rocroi J.-P. (Ed.) (2005). "Classification and nomenclator of gastropod families". '' Malacologia'' 47(1-2). . 3 ...

Description

The length of the shell attains 20 mm, its diameter 7 mm. The protoconch contains two smooth whorls. The subsequent

whorl A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral ...

s are sculptured with unequal spiral cords, as coarse as those on the

body whorl The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the b ...

. They are densely crenulate or beaded by close fine longitudinal laminae, much less prominent and closer than the spirals. The body whorl is densely and evenly latticed by alternately larger and smaller spiral cords intersecting scarcely less prominent, but rather closer, longitudinal rib-striae. The color of the shell is pale brown, every fourth cord marked with brown in narrow lines along the cord, alternating with diffused white spots. A row of alternately brown and white squarish spots appear below the suture: the early whorls brown. The aperture is smooth within. The outer lip is thin, regularly arcuate, rather strongly retracted above. Pilsbry (1901) - New marine and fresh-water mollusca from Japan; Proceedings of the Academy of Natural Sciences of Philadelphia v. 53 (1901)

Distribution

This marine species occurs off the Hawaii, the Philippines,

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

and Korea.

References

* Kuroda T. (1947). Mollusca (Gastropoda, Scaphopoda and Pelecypoda). Pp.1028-1262, in Uchida K. (ed.) Illustrated Encyclopaedia of the Fauna of Japan. Revised Edition. Tokyo: Hokuryūkan. * Severns, M. (2011). Shells of the Hawaiian Islands - The Sea Shells. Conchbooks, Hackenheim. 564 pp.

External links

Reeve L.A. (1843-1846). Monograph of the genus Pleurotoma. In: Conchologia Iconica, vol. 1, pl. 1-40 and unpaginated text. L. Reeve & Co., London. (stated dates: pls 1-2, January 1843; pls 3-6, February 1843; pls 7-8, March 1843; pls 9-10, April 1843; pls 11-12, May 1843; pls 13-14, June 1843; pl. 15, July 1843; pl. 16, August 1843; pl. 17, November 1843; pl. 18, December 1843; pl. 19; January 1844; pls 20-26, October 1845; pls 26-27, November 1845; pls 28-33, December 1845; pls 34-38, January 1846; pls 39-40, April 1846).

Pease, W. H. (1860). Descriptions of new species of mollusca from the Sandwich Islands (Part II). Proceedings of the Zoological Society of London. 28: 18-36, 141-148

Pilsbry H.A. (1901). New Japanese marine, land and fresh-water Mollusca. Proceedings of the Academy of Natural Sciences of Philadelphia. 53: 385-408, pls 19-21

Li B.-Q. [Baoquan
& Li X.-Z. [Xinzheng">aoquan">Li B.-Q. [Baoquan
& Li X.-Z. [Xinzheng(2014) Report on the Raphitomidae Bellardi, 1875 (Mollusca: Gastropoda: Conoidea) from the China Seas. Journal of Natural History 48(17-18): 999-1025] *
Gastropods.com: ''Daphnella interrupta''

Kay, E. A. (1979). Hawaiian marine shells. Reef and shore fauna of Hawaii. Section 4: Mollusca. Bernice P. Bishop Museum Special Publications. 64xviii + 1-653

Moretzsohn, Fabio, and E. Alison Kay. "HAWAIIAN MARINE MOLLUSCS." (1995)
interrupta Gastropods described in 1860 {{Daphnella-stub