INLAND MOLLUSCA OF SOMERSET. 137 



Class GASTEEOPODA. 



Div. PROSOBRANCHIATA, 



Fam. NEßlTID^. 



Genus Neritina. Lamarck. 



N. ßuviatilis, Linnseus. Nerita fluviatilis, Mat. and 

 Kack., Trans. Lin. Soc, vol. viii., p. 225. "In pools near 

 the Avon." — Miller. " Bridgwater and Weston-super- 

 Mare."— Rev. W. E. Crotch. 



Fam. PALUDINID^. 



Genus Paludina. Lamarck. 



P. Listen, Forbes and Ilanley. The Rev. W. ß. Crotch 

 and the Curator of the Bristol Museum inform us that 

 they have taken this species near Weston-super-Mare. 

 The latter met with it, we believe, near the railway 

 etation. 



Genus Bithinia. Gray. 



B, fentaculata, Linna3us. Hclix tentaculata, Mat. and 

 Rack., Trans. Lin. See, vol. viii., p. 220. Abundant. 



ß. Leacläi, Sheppard. In the larger and clearer streams. 

 Abundant and fine in West Mead Rhine, yatton. — A. M. N. 

 Weston-super-Mare. — Rev. W. R. Crotch. 



Genus Valvata. Müller. 



V. piscinalis, ^lüUer. Turbo fontinalis, Mat. and Rack., 

 Trans. Lin. Soc, vol. viii., p. 1G8. Common in similar 

 localities to the last. 



V. cristata, Müller. Turbo cristatus, i\Iat. and Rack., 

 Trans. Lin. Soc, vol vili., p. 169. Valvata minuta, Dra- 

 parnaud (the young?). Very local. A fcw spccimens 

 from a ditch in Kenn ISIoor ; also near Wells. — A. M. N. 



VOL. X., 1860, PART 11. s 



