100 



PROCEEDINGS OE THE GEOLOGICAL SOCIETY. 



Table {continued). 



Species. 





Ilford. 





Q 



I 



m 





Pupa marffiuata Dtciv 



* 

 ■ss- 



•K- 





■K- 



* 





umbilicata, Dvajp 



(Yertigo)antivertigo,jD^«p. 



( ) pusilla, Mull 



( ) substriata, Jeff. ... 



Succinia putris, Linn 



Unio litoralis, Lam 



pictorum, Linn 



tumidus, Phil. 



Valvata cristata, Milll. 



piscinalis, Miill 



Zua lubrica, Milll, 



Velletia lacustris, Milll. 





