''Calliotropis lissocona'' 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 Eucyclidae
Eucyclidae is a family of gastropods in the superfamily Seguenzioidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).
This family has no subfamilies.
Genera
Genera within the family Eucyclidae include:
* '' Amberley ...
.
Description
The shell grows to a length of 6.3 mm. The shell has a conical shape. It consists of 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, which glisten with that peculiar spun-glass or flossy luster noticeable in so many abyssal species. The sculpture consists of two lines closely appressed to the
sutures, less prominent and less conspicuously provided with the angular projections than in ''
Calliotropis vaillanti
''Calliotropis vaillanti'' is a species of sea snail, a marine gastropod mollusk in the family Eucyclidae.
Description
The height of the shell attains 8 mm.
Distribution
This species occurs in the Atlantic Ocean off Portugal, the Azores ...
''
(P. Fischer, 1882). Between the upper and lower lines the surface of the whorl is smooth, except for lines of growth, shining as above described, and seems even a little concave. The nodules on the upper carina of one whorl fit into the spaces between the nodules on the lower carina of the preceding whorl, and thus alternate along the line of the suture and give it a wavy character. The carina 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 ...
is seen to be formed by two threads, which constitute the periphery, with fainter angularities than the others. The base of the shell is somewhat inflated, with two sharp, smooth threads between the periphery and the nodulate boundary of the small funnel-shaped
umbilicus. The lines of growth are much as in ''Calliotropis vaillanti''. The umbilicus is not infringed upon by any reflection of the
columellar
lip, and the
aperture is about as wide as high, and less distinctly rectangular.
Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
(described as ''Trochus (Solariella) lissocona'')
Distribution
This species is distributed in the Caribbean Sea and the Gulf of Mexico
References
* Rosenberg, G., F. Moretzsohn, and E. F. García. 2009. ''Gastropoda (Mollusca) of the Gulf of Mexico'', pp. 579–699 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas.
External links
lissocona
Gastropods described in 1881
{{Eucyclidae-stub