''Cantharidus bisbalteatus'' 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 Trochidae, the top snails.
[H. Pilsbry, ''New Mollusca from Japan, the Loo Choo Islands, Formosa and the Philippines''; Proceedings of the Academy of Natural Sciences of Philadelphia, Vol. 53, No. 1 (Jan. - Mar., 1901), pp. 193–210]
Description
The height of the shell attains 12.5 mm, its diameter 9 mm. The imperforate or minutely rimate, glossy shell has an elevated conical shape. It is encircled by a crimson or scarlet belt at the periphery and another bordering the
suture below, continuous or interrupted by white streaks or spots, and roseate around the umbilical tract. The intervening spaces are somewhat olivaceous, with a few narrow spirals of alternate blue or white and red-brown dots. Two or three of these spiral lines ascend the
spire. Its
sculpture consists of slight growth lines and fainter or wholly obsolete fine spiral striae above, and about 6 fine-spaced grooves around the umbilical region, stronger toward the middle. The conic spire has an acute
apex. The about 6½
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 quite convex. They are separated by an impressed suture. 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 ...
is subangular at the periphery and convex beneath. The
aperture is oblique, rounded rhombic, pearly and iridescent within, with green, or green and red reflections. It scarcely shows any appearance
of sulcation. The white
columella is concave above, somewhat straightened in the middle. The white columellar area is excavated.
Distribution
This marine species occurs off
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 ...
References
External links
*
{{DEFAULTSORT:Cantharidus Bisbalteatus
bisbalteatus
Gastropods described in 1901