33 



820 Calyptraea auriculata. Patella auriciilata, Dillw. 



many varieties 



821 Cormtia-notata 



822 radians. Trochus radians, Lam. 



CREPIDULA. 



823 Crepidula fornicata 



824 Porcellana 



825 aculeata 



826 unguiformis 



827 dilatata 



828 adunca 



829 BuUaea aperta 



BULLA. 



830 Bulla lignaria 



831 Ampulla, a considerable series of fine va- 

 rieties in colour and markings 



832 striata 



833 Naucum 



834 Physis, several fine specimens 



835 fasciata, several fine specimens, of which 



one is remarkable for being white with four 

 fuscous, transverse bands 



836 Aplustre, several fine specimens 



837 Hydatis 



838 solida 



839 nitidula, Solander 



DOLABELLA. 



840 Dolabella Rumphii 



^ 



