MOLLUSCA. 



II. ORDER PROSOBRANCHIA. 



2. SUB-ORDER CTENOBRANCHIA, Schweigger. 



[Pectinobranchia, Guvier]. 

 1. Group TAENIOGLOSSA, Gray. 



SECTION A .-HOLDS TOM A, Blainville. 



1. Family AMPULLARIID^E, Guilding. 



GENUS AMPULLAKIA, Lamarck. 



Prod. 1799 and Syst. anim. sans vert. 1801, type Helix ampullacea, 

 Linn. 



1. Ampullaria globosa. 



Ampullaria globosa, Swainson, Zool. III. 1822, " Indian Rivers" ; 

 Ampullaria orbata, March, [as " of Perry 1811 "] ; from Bangkok, fide 

 Morelet ; fide Martens, Mai. 31. 1857: alt. 74, diam. 78 mil. 



3 Jamalpur and Gopalpur ; coll. Dr. F. Stoliczka. 



50 Calcutta, Pt. Canning, Raniganj and Dacca; coll. Dr. F. Stoliczka, 

 J. Willson and G. Nevill, Esqrs. 



4 Allahabad ; coll. Major L. W. Wilmer and J. Cockburn, Esq. 

 7 Sambalpur, Central Provinces ; coll. Colonel M. M. Bowie. 



5 Manbhum ; coll. V. Ball, Esq. 



11 Dum-Duin; coll. Major L. W. Wilmer. 



1 Kusiara River, above Panchuganj, Sylhet; coll. J. Wood-Mason, 

 Esq. 



This last specimen is very interesting, as it was found im- 

 mediately associated with A. maura ! Calcutta pecimens usually 



