A LIST 



LAND AND FRESH-WATER SHELLS 



FOUND IN THE 



ENVIRONS OF LONDON. 



(Arranged according to Dr. Turtons Manual of the 



Land and Fresh-water Shells of the British Islands, 



in which are coloured plates of every species.) 



J. C. signifies Mr. James Carter. 

 T. B. . . . Thomas Bell. 



C. F. . . . Charles Finch. 



D.C. . . . The Author. 



CYC1AS CYCLE. 



*1. Cyclas rivicola, River Cycle Thames shore near the Red 



House, (J.C.)(T.B.)(D.C.) 



2. Cyclas cornea, Horny Cycle Thames, ponds on Wands- 



worth Common, Greenwich marshes, 



(J.C.)(D.C.) 



3. Cyclas calyculata, Capped Cycle In the Croydon Canal near 



Norwood (1). C.) In the Thames and at 

 Shacklewell (T. B.) On Bookham Com- 

 mon, Surrey {Trans, of Cambr. Philos. Soc.) 

 5. Cyclas amnica, Rivulet Cycle In the Thames (T. B.) 

 7. Cyclas pusilla, Minute Cycle Thames near Chelsea (J.C.) 

 In Greenwich marshes (D. C.) 



* The numbers correspond to the plates in Turton's Manual. 



