Atys sandersoni

Atys sandersoni
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Cephalaspidea
Family:	Haminoeidae
Genus:	Atys
Species:	A. sandersoni
Binomial name
Atys sandersoni Dall, 1881

Atys sandersoni, common name the Sanderson's paper-bubble, is a species of small tropical sea snail, a bubble snail, a marine opisthobranch gastropod mollusk in the family Haminoeidae, the haminoea bubble snails. ^[1]

Description

The length of the shell attains 11 mm, its diameter 5.5 mm.

(Original description) The shell is small, thin, fragile, and polished, displaying a translucent white color. The aperture is notably longer than the axis of the shell. The overall form is slender and is shaped like an elongated oval, with the posterior fourth part being slightly beveled off.

The transverse sculpture consists solely of delicate, evanescent lines of growth, which are sometimes lost in the general polish of the surface. The spiral sculpture is composed of about a dozen incised lines near either extremity. These lines become more crowded toward the tips and are obsolete toward the middle of the shell; they reticulate the lines of growth when the latter are present. This sculpture is delicate and extremely fine, but it is not puncticulate.

The posterior apex features a rather deep, funiculate pit. Out of the center of this pit rises the margin of the aperture, which is slightly reflected here. It extends behind the summit of the body and suddenly curves forward, creating a very narrow aperture. This opening is produced into a rounded point in front, then it is sharply recurved and reflected to a point where the reflected part merges into the thin callus on the body within the aperture. The anterior reflection is sometimes closely appressed and sometimes loose, leaving a small chink behind it, but there is no anterior pit.

The shell appears more slender toward the front than behind, and the bevelling is more marked in some specimens than in others. ^[2]

Distribution

This marine species occurs in the Caribbean Sea; in the Atlantic Ocean off North Carolina, USA (South of Cape Lookout: 30 m) and off Brazil.

References

1. Atys sandersoni Dall, 1881 . 10 January 2026. Retrieved through: World Register of Marine Species .
2. Dall, W.H. (1881). "Reports on the results of dredging, under the supervision of Alexander Agassiz, in the Gulf of Mexico, and in the Caribbean Sea, 1877-79, by the United States Coast Survey Steamer "Blake," Lieutenant-Commander C. D. Sigsbee, U. S. N., and Commander J. R. Bartlett, U. S. N., commanding. XV. Preliminary report on the Mollusca". Bulletin of the Museum of Comparative Zoology at Harvard College. 9 (2): 99. Retrieved 10 January 2026. This article incorporates text from this source, which is in the public domain .

• Rosenberg, G.; Moretzsohn, F.; García, E. F. (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. Texas A&M Press, College Station, Texas.

External links

• Porter, H.J. (1974). The North Carolina marine and estuarine Mollusca: An Atlas of occurrence. Morehead City: The University of North Carolina Institute of Marine Science. p. 277.
• iNaturalist - Sigmaringa: image