64 Acephala ;.. Elatobranchiata. 
Unio coarctatus, Lam. 
purpurascens, Lam. 
radiatus, Lam. (Mya natliqtes Gm.) 
clava, Lam. 
rubens, m. 
Lemovicincae, Fér. (Un. ater, Nilss.) 
crassus, Retz. (Un, manca, Fér., Un, litoralis, Pf.) 
riparius, Pf. 
litoralis, Lam. 
rugatus, m. : 
semirugatus, Lam, 
alatus, Say. 
pictorum, Lam. (Mya pictorum, L.) 
tumidus, Retz. (Un. rostrata, Lam. ?) 
batavus, Lam. 
niloticus, Mus. T | 
corrugatus, Lam. (Mya corrugata, Müll). 
nodulosus, Lam. (Mya nodosa, Gm.) 
virginianus, Lam. 
Bonelli, Fér. (Un, depressus, Mhlfld.) 
Castalia, Lam. 
Fam. 3. Carditaceae. 
Cardita, Lam. 
sulcata, Br. (Chama antiquata, L.) 
aiar, Br. 
turgida, Lam, 
trapezia, Br, ssissm a sos Müll.) 
rufescens, Lam. 
subaspera, Lam, 
concamerata, Br. (Chama concamerata, Chemn.) 
Cypricardia, Lam. EA 
Venericardia, Lam. 
