MOLLUSCA. 



II. Class CEPHALOPHORA, Blahw, 



I. Sub-Class GASTEOPODA, Cuvier. 



1. Order PULMONATA, CMvier. 



]. Sub-order GeopMla, Fer. (Stylommatophora, A. Sc/tm.). 



Family HELICID^, Gra^. 

 [Group AGNATHA, Morch.] 



1. Sub-family ONGHIDIID^, Gray. 



Genus ONCHIDIUM, Buchanan (type 0. ti/phce). 



1. Onchidium typllSe, Buchanan. 



20 in alcohol. Calcutta ; coll. G. Nevill, Esq., and Dr. F. Stoliczka. 



2. Onchidium pallidum, Stoliczka. 



3 in alcohol, (types) Port Canning; coll. G. Nevill, Esq., and Dr, 

 F. Stoliczka. 



3. Onchidium tigrinum, Stoliczka. 



12 in alcohol, (types) Port Canning j coll. G. Nevill, Esq., and Dr. 

 F. Stoliczka. 



4. Onchidium tenerum, Stoliczka. 



10 in alcohol. Port Canning (type) ; coll. G. Nevill, Esq., and Dr. 

 F. Stoliczka. 



5. Onchidium veruculatum. Cuvier. 



1 Ceylon ; coll. Hugh Nevill, Esq. 



6. Onchidium, n. sp. (?). 



2 Andaman Islands; coll. J. Wood- Mason, Esq. 



A. 



