OLIVA.— Plate XVIII. 



Figs. 

 278,279. Braziliana, 116, Zam A-.— Brazil. 

 280. VESCicA, 118, Gmel. — West Africa. 



281,282. ovATA, 117, J/fwrai.— Hab. ? 



283-285. AUKicuLAEiA, 119, Lamk. — South America. 



286, 287. ciNCTA, 120, Reeve.— Rah. ? 



288-290. BiPLiCATA, 121, ,Soi/;&.— California. 



291-293. ZENOSPiEA, 123, Dud. — Madagascar. 



294-296. MiCANS, 124, Solander ; 0. nana, Lamk. — West 



Indies. 

 297-300. MiLLEPUNCTATA, 125, Biicl. — West Indies. 



