Rissoa, 15 
Rumina, 6 
Saxicava, 31 
Seila, 15 
Semele, 30 
Simnia, 14 
Sinum, 17 
Skenea, 16 
Solen, 30 
Sphaerium, 25 
Spirula, 1 
Strigilla, 29 
Strobilops, 3 
Strombus, 15 
Strongylocera, 11 
Succinea, 4 
Symphynota, 24 
Tagelus, 30 
Tellidora, 29 
Tellina, 29 
Terebra, 8 
Teredo, 32 
Tethys, 2 
Thracia, 32 
INDEX 
Thyasira, 26 
Trachydermon, 19 
Tralia, 2 
Triforis, 15 
Turbonilla, 13 
| Turtonia, 27 
| Umbonium, 18 
Unio, 24 
Urosalpinx, 12 
Vallonia, 4 
Venericardia, 26 
Venus, 28 
Vermicularia, 15 
Vertigo, 4 
Vitrea, 5 
Vivipara, 16 
| Xylotrya, 32 
Yoldia, 19 
Zirphaea, 31 
Zonitoides, 5 
39 
