Assiminea umlaasiana is a species of small operculate snail, a marine gastropod mollusc or micromollusc in the family Assimineidae.
Distribution This marine species occurs off Port Alfred, South Africa.
References
Smith, E.A. (1902). Descriptions of new species of marine shells from South Africa. Journal of Conchology. 10: 248–251. Connolly, M. (1939). A monographic survey of South African non-marine Mollusca. Annals of the South African Museum. 33: 1-660