Alvania compacta is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.MolluscaBase eds. (2024). MolluscaBase. Alvania compacta (P. P. Carpenter, 1864). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=580527 on 2024-01-18
Description The length of the shell varies between 2 mm and 3 mm.
It is sculptured like Alvania beanii, but with short, broad whorls.Carpenter, P. P. (1864). Supplementary report on the present state of our knowledge with regard to the Mollusca of the West Coast of North America. Reports of the British Association for the Advancement of Science. (1863) 33: 517-686
(Described as Rissoia acutelirata) The thin shell has a brownish ash-color. Its sculpture shows about 18 longitudinal, distant ribs, vanishing on the periphery, crossed by distant spiral lirae (15 on the body whorl). The shell is not nodose. It contains six convex whorls, rapidly enlarging, with a well-impressed suture.G.W. Tryon (1884), Manual of conchology, structural and systematic : with illustrations of the species; Academy of Natural Sciences ser. 1, vol. 9
Distribution This species occurs off Alaska, USA to Northern Baja California, Mexico
References
Turgeon, D., Quinn, J. F., Bogan, A. E., Coan, E. V., Hochberg, F. G., Lyons, W. G., Mikkelsen, P. M., Neves, R. J., Roper, C. F. E., Rosenberg, G., Roth, B., Scheltema, A., Thompson, F. G., Vecchione, M., Williams, J. D. (1998). Common and scientific names of aquatic invertebrates from the United States and Canada: mollusks. 2nd ed. American Fisheries Society Special Publication, 26. American Fisheries Society: Bethesda, MD (USA). ISBN 1-888569-01-8. IX, 526 + cd-rom pp.
External links Bartsch, P. (1911). The Recent and fossil mollusks of the genus Alvania from the west coast of America. Proceedings of the United States National Museum. 41(1863): 333-362