Shells rissooidean, inhabiting fresh and brackish waters. Distinct from Hydrobiidae, but without noticeable morphological characters.
 

Synonym Semisalsa Radoman, 1974, who writes: « Shell conical, elongated, with moderately pointed apex, in younger specimens smooth, shining and transparent; moderately tumid whorls, separated by a rather deep suture, gradually and regularly expanding in width. Aperture usually angular at the top, in rare specimens slightly round (at the top), but very narrow. The margins of the aperture thin, peristome discontinuous, with columellar margin applied to the last whorl so that this margin often is seen as a callus; outer lip gently curved, umbilicus closed, in rare cases (in the same species) barely slitlike. » – P. Radoman: “Some new gastropod representatives from the brackish waters of the Adriatic and Ægean seasides”, The veliger vol.16(3), Berkeley 1974, p.283. In fact, the apex is less than « moderately pointed »: it is flat, with the protoconch sunken.