Two new stygobiotic species of Horatia Bourguignat, 1887 (Hydrobiidae) from Croatia

In this paper we describe two new species of the freshwater snails genus Horatia . A stygobiotic Bourguignat, 1887 is described from Izvor Beguša in Croatia. It occurs sympatry with crenobiotic H. klecakiana 1887, but morphologically and molecularly distinct. characterized by terminal part body whorl separated columella, neither eyes nor any pigment on soft parts. a stygobiont gastropod, known so far only one living specimen several empty shells, thus its morphology anatomy remain unknown. Another was found inside cave Mali Rumin, description based solely numerous shells sediments.