EXPLANATION or PLATES. 331 



i"ia. 



427. Bullia vittata. 



428. Terebra maculata. Subula, Bl 



429. Trichotropis bicarinata. 

 Polytropa, fig. 546. 

 Vexilla, fig. 544. 

 Grastridium, fig, 545. 

 Daphnella, fig. 593. 



To be added to this family. 



Fam. Columellata. 



430. Columbella mercatoria. 



431. Mitra plicaria; e. termination of the columella. 



432. Conohelix marmorata. 



433. Voluta Vespertilio. Cymbiola, Sw. 



434. Cymba porcina. 



435. Melo ^tbiopicus. 



436. Volutilithes spinosus. 



437. Marginella G-labella. G-labella, Sw. Cucumis, Klein. 



438. persicula. Yolutella, Sw. Persicula, Sebum. 



439. Volvaria concinna. 

 Harpula, fig. 557. -^ 

 Mitreola, fig. 558. | 



Mitrella, fig, 559. )> To be added to this family, 



NitideUa, fig. 560. I 



Pachybatbron, fig. 600. -^ 



Fam. Convolutse. 



440. Ovulum Ovum. 



441. verrucosum. Culpurnus, Moutf. 



442. — Volva. Radius, Montf. 



443. gibbosum. Ultimus, Montf. 



444. Cyprseovulum capense. 



445. Cypraea arabica, back. 



446. The same, front. 



447. Cyprgea Algoensis. Luponia, Gray, front. 



449, Pediculus. Trivia, Gray, back, 



450. The same, front. 



