28 



FAMILY 39. YALYATID^. Gray. 

 GENUS. VALVATA. Mullcr, 1774. 



1 V. carinata. Say. Hab. ? 



2 V. piscinalis. Ferrussac. Bordeaux. 



FAMILY 40. AMPULLARIID^E. D'Orbigny, 1837. 

 GENUS. AMPULLARIA. Lamarck, 1799. 



SirW.Denison, 



FAMILY 41. TURRITELLID^. Clarck, 1851. 

 GENUS. TURRITELLA. Lamarck, 1799. 



1 T. attennata. Reeve. Coromandel.* 



2 T. bicingulata ? Lamarck. Cape de Verd 



Islands. 



3 T. cornea. British Seas. 



4 T. duplicata. Eastern Seas.** 



5 T. lerebra. Singapore. 



FAMILY 42. CJECID^. Gray. 

 GENUS. CJ2CUM. Fleming, 1811. 

 1 C. trachsea. Forbes. Britain. 



