Pyrgulopsis is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Hydrobiidae.

[1] Generic characters of the genus Pyrgulopsis are: the shell is minute, conically turreted, somewhat elongated, imperforate and unicarinate.

[1] The operculum is ovate, thin, corneous and spiral, with polar point well forward and approximating the columella.

[1] The distribution of the genus Pyrgulopsis includes Western and South-western United States.

[1] Pyrgulopsis is the largest genus of freshwater gastropods in the North America.