Quarterly Journal of Conchology. 55 



Anodonta cygnea. — River Chei^well, and Oxford Canal. 



Anodonta anatina. — River Cherwell, and Oxford Canal. 



Ereissena polymorpha. — Oxford Canal, lining the banks in 

 myriads, and forming the freqnent food of the water rats, who leave 

 tlie empty shells in heaps upon the canal banks. 



Neritina fluviatilis. — On stones. River Cherwell. 



Paludina vivipara. — River Cherwell and Oxford Canal. 



BytMnia tentaculata. — River Cherwell and Oxfoi'd Canal.abnndant 

 on Anacharis ahmastrum. 



Bythinii Leachii. — Oxford Canal, not abundant. 



Valvata piscinalis. — River Cherwell, covering the mud on sunny 

 shallows. 



Valvata cristata. — Ditches running into River Cherwell, in the 

 axils of water weeds. 



Planorbis nitidus. — River Cherwell, very scarce. 



Planorbis albus. — River Cherwell, on Anacharis and underside of 

 Lily leaves. 



Planorbis gpirorbis.— Oxford Canal, scarce. 



Planorbis vortex. — River Cherwell and Oxford Canal, abundant on 

 weeds. 



Planorbis cariratus. — River Cherwell and Oxford Canal, preferring 

 lai'ge ditches to the river. 



Planorbis ccmplanatus. — River Cherwell and Oxford Canal, pi'e- 

 ferring large ditches to the river. 



Planorbis corneus. — River Cherwell and Oxford Canal. 



Planorbis contortus. — Ditches running into River Cherwell in 

 axils of weeds. 



Physa hypnorum. — River Cherwell; very scarce amongejectamenta. 



Physa fontinalis. — River Cherwell, very abundant on Anacharis. 



Limnsei peregra. — Abundant everywhere ; several varieties occur. 



Lim'naBa auricularia. — River Cherwell, very fine and abundant. 



Lin^nsea stagnalis. — River Cherwell, very fine and abundant. 



Limusei palustris. — Kiver Cherwell, pi-eferring the oozy shores 

 to the river, 



LimnSBi truncatula. — River Cherwell, covering the shores in 

 myriads. 



Ancyliisflaviatilis. — River Cherwell, but always on stones. 



Ancylus lacustris. — River Cherwell, stems and leaves of water plants, 

 lily leaves, especially in company with F. aJbus. 



Succiaea putri?'. — River Cherwell and Canal, abundant, but small. 



Vitrina pellucida. — Edgehill, Draper's Road, Broughton Road, 

 under dead leaves. 



Zonites cellaring. — Common every-\vhere, but not large. 



Zonites alliarius. — Edgehill and general, 



Zonites nitidulus. — Not uncommon everywhere. 



Zonites purus. — Edgehill, scarce. 



Zonites crystallinus. — Edgehill, abundant among dead leaves. 



Zonites fulvus. — Edgehill, abundant among dead leaves. 



Helix aculeata. — Edgehill, among dead leaves ; very scai'ce. 



