| 词条 | Mitromorpha torticula |
| 释义 |
| taxon = Mitromorpha torticula | image = Mitromorpha torticula 001.jpg | image_caption = Original image of a shell of Mitromorpha torticula | authority = (Dall, 1889) | synonyms_ref = [1] | synonyms =
| display_parents = 3 }}Mitromorpha torticula is a species of sea snail, a marine gastropod mollusk in the family Mitromorphidae.[1] DescriptionThe length of the shell attains 12.2 mm, its diameter 4 mm. (Original description) The elongated shell is acute. It is pale yellowish, paler toward the extremities, with a dehiscent thin fibrous epidermis. Its axial line is somewhat convex toward the right. The protoconch is glassy, white, mammillate and consists of two whorls. The other whorls number about six, of which the body whorl forms more than half the shell. The sculpture consists of (on the body whorl) 12 rounded straight ribs, widest near the periphery, extending across the whorls and fainter near the suture and on the siphonal canal. These are crossed by about (on the body whorl) 16 rounded even threads, which pass over the ribs and interspaces without any marked nodulation and are separated by wider interspaces. The suture is not impressed. The aperture is narrow. The outer lip is thin and simple except for a slight crenulation due to the sculpture. The columella is straight, acute anteriorly. There is no callus on the body or columella. The shell show two plaits, distinct but not strong. [2] DistributionThis species occurs in the Caribbean Sea off Cuba. References1. ^1 {{WRMS species|432821|Mitromorpha torticula (Dall, 1889)||29 March 2010}} 2. ^ Dall W. H. 1889. Reports on the results of dredging, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877-78) and in the Caribbean Sea (1879-80), by the U.S. Coast Survey Steamer "Blake", Lieut.-Commander C.D. Sigsbee, U.S.N., and Commander J.R. Bartlett, U.S.N., commanding. XXIX. Report on the Mollusca. Part 2, Gastropoda and Scaphopoda. Bulletin of the Museum of Comparative Zoölogy at Harvard College 18: 1-492, pls. 10-40 {{PD-notice}}
External links
2 : Mitromorpha|Gastropods described in 1889 |
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