8 R. spectrum ? Reeve. a Reunion. M. Robillard. 
= 6 Mauritius. A 
9 R. tuberculata, DeBlainville. a Lord Hood’s Is- 
lL M. bituberculata. ? Philippines. 
Genus.—MONOCEROS. Lamarck, 1809. 
) M. cornigera. ? California. M. Robillard. 
2 M. lugubris. Sowerby. Nootka Sound. 
Grenus.—CONCHOLEPAS, Lamarck, 1801. 
1 C. peruvianus. Lamarck. Coast of Peru. 
Famity 7.—CORALLIOPHILIDZ. 
Genus.—LEPTOCONCHUS. Ruppel, 1834. 
I L. ellipticus. ? Japan. 
Genus.—MAGILUS. Monéfort, 1810. 
1 M. antiquus. Lamarck. a Red Sea. 
6 Port Blair An- Dr. Walters, 
damans. 
Famity 8.—OLIVIDZ. 
Grenus.—OLIVA. Bruguiére, 1789. 
1 O. angulata. Chemnitz. Lower California. SirW.Denison. 
2 O. cruenta. - Dillwyn. a Zanzibar. 
6 Port Blair, An- 
damans. 
3 O. elegans. Lamarck. Feejee Islands. 
4 O. erythrostoma. Te South of the Cape of 
Good Hope. 
5 O. fimbriata. Reeve. West Indies.* 
6 QO. gibbosa. Born, a Ceylon.* * * 
6 Madras Coast.* 
7 O. inflata. Lamarek. Zanzibar. 
8 O. irisans. = a Mauritius.* 
6 Port Blair, An- Dr. Gamach. 
damans. 
9 O. ispidula. Linneus. a Philippines.* * 
6 Port Blair, An- Dr. Walters.* 
_ damans. 
c Madras Coast. Surgeon E. 
land. 
b Vizagapatam. SirW.Denison.** 
Sus-Gexnvs.—MORULA. Schumacher, 1817. 
Balfour.** 
