250 OVULA. 



Animal citron-colored, viscera slate-colored, eyes reddish black, 

 very small. L. 5 mill., diam. 3 mill. 



China Seas (Stimpson). 

 Unfigured, and the specimens destroyed by fire. 



Subgentis CALPURNUS, Montfort, 1810. 

 0. VERRUCOSA, Linn. PL 5, figs. 56-58. 



White, with fine incised transverse stria?, extremities rosy 

 tipped. Length, 1'25 inches. 



East Africa, Indian Ocean, Philippines, N Caledonia. 



Unfigured and Doubtful Species. 



0. BULLATA, Gould (sp. name preoccupied). Hab. unknown. 



0. ALBA and 0. NIGERRIMA, Dufo. Seychelles. 



O. (CYPHOMA) ELONGATA, A. Ad. Japan. 



0. (BIROSTRA) MoCoYi, Tenison-Woods. Australia. 



O. GALLINACEA and 0. CORRUGATA, Hinds. = ERATO, Manual, v, 

 10, 11. 



