A revision of the recent species of Rissoina (Moerchiella), Rissoina (Apataxia), Rissoina (Ailinzebina) and Rissoina (Pachyrissoina) (Gastropoda: Rissoidae)
1993
Sleurs, W.J.M. (Koninklijk Belgisch Inst. voor Natuurwetenschappen, Brussel (Belgium). Afdeling Malacologie)
The recent species of Rissoina (Moerchiella), Rissoina (Apataxia), Rissoina (Ailinzebina) and Rissoina (Pachyrissoina) are revised. A total of fourteen species is recognized. Two new species-group taxa are named: Rissoina (Moerchiella) kilburni sp. nov. and Rissoina (Moerchiella) okinawensis sp. nov. Two probably new species, that belong to Rissoina (Ailinzebina), known from only a few specimens are described but not named. Shell features of all species are redescribed or described in detail and, where available, data on the operculum, the radula and the internal anatomy is also provided. The known distribution of each species is reported.
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