308 EXPLANATION OF PLATES. 



FIG. 



439. Volvaria concinna. 



Fam. Convolutee. 



440. Ovulum Ovum. 



441. verrucosum. Calpurnus, Montf. 



442. Volva. Radius, Montf. 



443. gibbosum. Ultimus, Montf. 



444. Cyprseovulum capense. 



445. Cypreea arabica, back. 



446. The same, front. 



447. Cyprsea Algoensis. Luponia, Gray, front. 



449. Pediculus. Trivia, Gray, back. 



450. The same, front. 



451. Terebellum convolutum. Seraphs, Montf, 



452. subulatum, front. 



454. Erato Mangerise. 



455. Ancillaria glabrata. Anolax, Brongn. 



456. cinnamonea. 



457- Oliva Maura. 



458. subulata. Hiatula, Sw. 



459. Conus noctumus. Rhombus, Montf, 



460. Nussatella. Hermes, Montf. 



461. ■ Textile. Cylinder, Montf. 



462. geographus. Rollus, Montf. 



Order. Cephalopoda. 

 First Division. Polythalamous Cephalopoda. 



Fam. Orthocerata. 



463. Amplexus coralloides. (from Sow. Min. Con.) 



464. Orthoceratites annulatus. 



465. Nodosaria sequalis. 



466. Belemnites, with the outer coat broken to shew the alveole. 



467. portion of the alveole separated. 



46g, _ hastatus. Hibolithes, Montf. (from Blainville.) 



469. Conularia quadrisulcata. 



