33 



20 T. umbilicatus. Pennant. 



21 T. vividus. Reeve. 



Britain. 



Port Blair, An- Dr. Walters * 

 damans. 



GENUS. CLANCULUS. Montfort, 1810. 

 1 C. Pharaonis. Linnaeus. Red Sea. 



GENUS. MOXODOXTA. Lamarck, 1799. 



1 M. angulata. Adams. Jamaica. 



2 M. labio. Lamarck. Atlantic Ocean. 



3 M. turbinata. Gmelin. France. M. Robillard. 



GENUS. ZIZYPHIXUS. Gray, 1840. 



1 Z. couuloides. Lamarck. Britain.* 



2 Z. Tranquebaricus. Chemnitz. Vizagapatam. Major Frazer.* 



GENUS. ELEXCHUS. Humphrey, 1797. 

 1 E. badius. Wood. South Australia. 



GENUS. BAXKIVIA. Seek, 1848. 

 1 B. purpurasceus. Deshayes. South Australia. 

 GENUS. TROCHISCUS. Sowerby, 1838. 

 1 T. Norrisii. Sowerby. Vancouver's Island. 



GENUS. MARGARITA. Leach, 1819. 

 1 M. uudulata. Sowerby. North Seas. 



THIBE 7. STOMATELLIXJE. 

 GENUS. STOMATELLA. Lamarck, 1809. 

 1 S. imbricata. Lamarck. Australia. 



FAMILY 3. HALIOTHXE. Fleming, 1829. 

 GENUS. II ALIOTIS. Linnaus, 1740. 



1 H. asinina. 



2 H. excavata. 



Linnaeus. 

 Lamarck. 



Port Blair, An- Dr. Walters, 

 damans. 



3 H. iris. 



4 H. Midse. 



5 H. revelata. 



6 H, semistriata. 



7 H. squamata. 



8 H. tuberculata. 



Gmelin. 



Linuoeus. 



? 

 Reeve. 





 Linnaeus. 



Kangaroo Island, 



Australia. 

 Cape of Good 



Hope.* 

 Reunion. 

 Ceylon. 



West Australia. 

 Guernsey. 



M. Robillard. 



SirW.Denisoa 



