Assiminea dubiosa is a species of small operculate snail, a marine gastropod mollusc or micromollusc in the family Assimineidae.
Description (Original description in Latin) The thin shell is ovate-conical, transparent, yellowish-brown, smooth, and shining. The apex is rather sharp, and the spire is subconoidal (somewhat cone-shaped).
It has six convex whorls, with an impressed suture. The body whorl is short and ventricose (swollen/bulging). The aperture is broad and ovate. The outer lip is thin. The inner lip is slightly reflected below.
Distribution This species occurs in Panama and Guadeloupe.
References
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.