8 R. spectrum ? Reeve. a Reunion. M. Robillard. 



b Mauritius. 



9 R. tuberculata. DeBlainville. a Lord Hood's Is- 



land. 



b Vizagapatam. SirW.Denison.** 

 SUB-GENUS. MORULA. Schumacher, 1817. 

 I M. bituberculata. ? Philippines. 



GENUS. MOXOCEROS. Lamarck, 1809. 



1 M. cornigera. ? California. M. Robillard, 



2 M. lugubrisj. Sowerby. Nootka Sound. 



GENUS. COXCHOLEPAS. Lamarck, 1801. 

 1 C. peravianns. Lamarck. Coast of Peru. 



FAMILY 7. CORALLIOPHHJDJE. 

 GENUS. LEPTOCONCHUS. Ruppel, 1834. 

 1 L. ellipticus. ? Japan. 



Oi.Nus. MAGILUS. Montfort, 1810. 



1 M. antiquus. Lamarck. a Red Sea. 



b Port Blair An- Dr. Walters, 

 damans. 



FAMILY 8. OLIVIDJE. 

 GENUS. OLIVA. Bruguiere, 1789. 



1 O. angulata. Chemnitz. Lower California. SirW.Denison. 



2 0. cruenta. Dilhvyn. a Zanzibar. 



b Port Blair, An- 

 damans. 



3 O. elegans. Lamarck. Feejee Islands. 



4 O. erythrostoma. South of the Cape of 



Good Hope. 



5 O. fimbriata. Reeve. West Indies.* 



6 O. gibbosa. Born. a Ceylon.* * * 



b Madras Coast.* 



7 0. inflata. Lamarck. Zanzibar. 



8 O. irisaus. a Mauritius.* 



b Port Blair, An- Dr. Gamach. 

 damans. 



9 O. ispidula. Linnaeus. a Philippines.* * 



b Port Blair, An- Dr. Walters.* 



damans. 



c Madras Coast. Surgeon E. 

 Balfour.** 



