^afet II. Q[öafferfd)nec!cn: 



1, 3, 5, 7 Limnaea auricularia (3 „fd^tDtmmenb" om '2ßaffetft)teget) ; 2 Lim- 



naea palustris; 4 Planorbis umbilicatus; 6 Planorbis corneus; 8, 9 Lim- 



naeus stagnalis; 10 Vivipara contecta (vera;. 



