Taf. XX 
Fig. 
1 — 2 . 
r) 
3— 4. 
77 
5 — 6 . 
57 
7— 9. 
>7 
10 — 12 . 
57 
13 — 14. 
77 
15—18. 
57 
19-23. 
57 
24-28. 
5? 
29-30. 
77 
31—32. 
57 
33. 
34—35.. 
Melanopsis Aquensis Grat. 
Lymmnaeus Balatonicus Fuchs. 
Cardiurn Balatonicum Fuchs. 
Congeria Balatonica Partsch. 
Pleurocera Schwabenaui Fuchs. 
Melanopsis geadata Fuchs. 
Planorbis tenuis Fuchs. 
Melanin inaspecta Fuchs. 
„ turbinelloides Fuchs. 
Litorinella subula Fuchs. 
Bilhynia obtusecarinata Fuchs. 
? Dreissenomya unioides Fuchs. 
Bilhynia proxima Fuchs. 
