PLATE XXVIII. 



PAGE 



Fig. 1. Natica psila, n. sp. . . . . . . . 443 



a. The natural size. | b. The shell, enlarged. 



Fig. 2. Natica insularum, n. sp. . . . . . . .440 



Fig. 3. Natica effossa, n. sp. . . . . . . .439 



a. The natural size. | 6. The shell, enlarged. 



Fig. 4. Natica (Amauropsis) perscalpta, v. Mart. . . . .454 



a. The natural size. | b. The shell, enlarged. 



Fig. 5. Natica grisea, v. Mart. ....... 432 



a. The natural size. 



b. The shell, enlarged. 



c. The natural size of the operculum. 



d. The operculum, inner face. 



e. The same, outer face. 



Fig. 6. Xenophora pallidula, Reeve . . . . . .464 



The shell is set about with many specimens of Terebra inamillata, n. sp., and Terebra, sp., Pleurotoma 

 speciosa, Keeve, Pleurotoma desliaysii, Doumets, Pleurotoma climacota, n. sp., Pleurotoma, sp., 

 Mitra, sp., Turbo (Calcar), sp., Cerithium, sp., Leda, var. sp., Limopsis, sp., Circe, sp., and others. 





