Genus Pirena Lam. 
audeberti Mousson 
fluminea Gmelin 
johnsoni E A. Smith 
lamarcki Pot. & Michaud 
lamarei Brot 
madagascariensis Grateloup 
sinuosa Philippi 
spinosa Lamarck. 
Familie Sphaeriidae. 
Genus Limosina Cless. 
ferruginea E. A. Smith 
madagascariensis Tristr. 
Genus Pisidium C. Pfr. 
johnsoni E. A. Smith. 
Ihn 
% 
% Pfr. 
h j 
-i 
