Acteon panamensis
Acteon panamensis is a species of sea snail, a marine gastropod mollusc in the family Acteonidae.[1]
| Acteon panamensis | |
|---|---|
| Shell of Acteon panamensis (holotype) | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Superfamily: | Acteonoidea |
| Family: | Acteonidae |
| Genus: | Acteon |
| Species: | A. panamensis |
| Binomial name | |
| Acteon panamensis Dall, 1908 | |
Description
The length of the shell attains 7.04 mm, its diameter 4.5 mm.
(Original description) The apex of the shell is badly eroded, but apparently blunt. The shell contains about four whorls, the body whorl much the largest. The spire is shorter than the aperture. The suture is strongly marked. The whorl in front of it is abrupt, but not channelled. The periostracum pale yellowish, nearly transparent and polished. The sculpture consists of (on the penultimate whorl four) sharp distant spiral, fine, microscopically punctate, incised lines. These increase on the body whorl to about fifteen, of which five or six on the base are closer, the remainder, on the sides of the whorl, are less crowded, subequidistant, and similar. The shell is obscurely parallel-sided, slightly rounded, with a rounded and slightly protracted base. The aperture is narrow and is rounded in front. The outer lip is sharp, simple, or minutely notched by the incised spiral lines. The body of the shell shows a slight wash of callus. The columella is straight, short and has a single obscure fold near the middle, which lags behind the aperture. There is no umbilical perforation. [2]
Distribution
This marine species occurs off in the Gulf of Panama.
References
- WoRMS. "Acteon panamensis Dall, 1908". World Register of Marine Species. Retrieved 28 March 2024.
- Dall, W. H. (1908). Reports on the dredging operations off the west coast of Central America to the Galapagos, to the west coast of Mexico, and in the Gulf of California, in charge of Alexander Agassiz, carried on by the U.S. Fish Commission steamer "Albatross," during 1891, Lieut.-Commander Z.L. Tanner, U.S.N., commanding. XXXVII. Reports on the scientific results of the expedition to the eastern tropical Pacific, in charge of Alexander Agassiz, by the U.S. Fish Commission steamer "Albatross", from October, 1904 to March, 1905, Lieut.-Commander L.M. Garrett, U.S.N., commanding. XIV. The Mollusca and Brachiopoda. Bulletin of the Museum of Comparative Zoology. 43(6): 205-487, pls 1-22 This article incorporates text from this source, which is in the public domain.
- Keen, A. M. (1971). Sea Shells of Tropical West America. Marine mollusks from Baja California to Peru. ed. 2. Stanford University Press. xv, 1064 pp., 22 pls