PALUDINIDiE. 37 



var. producta (? dist. sp.) 



8 Sambhar and Salt-Lakes ; ex c. Dr. F. Stoliczka, 

 6 Jamalpur ; ex c. Dr. F. Stoliczka. 

 10 Ferozpur ; coll. Capt. R. C. Temple (7, 5i). 



var. parvula (? dist. sp.) 



Moradabad ; ex c. As. Soc. Bengal. 



Jaunpur ; ex c. India House Museum [as " B. orcida — coll. Cantor"]. 



var. acuminata (? dist. sp.) 



1 Andamans [?] ; coll. F. A. de Roepstorff, Esq. 



This locality will be most interesting when confirmed. 

 9. Bythinia stenothyroides. 



Bytbinia stenothyroides, DoTirn, Proc. Zool. Soc. 1867, Ceylon ; Con. Indiea, 

 ^1.38, figs. 7 and 10. 



Extreme forms like the above quoted figure are easily dis- 

 tinguished. Specimens from the same piece of water, however, 

 vary sometimes to an extraordinary degree, in the more or 

 less produced spire ; some forms seem to unite the species with 

 B. orcula on the one hand and B. incons^picua on the other. 



50 Madras ; coll. Dr. F. Stoliczka, G. Nevill, Esq., and ex c. Madras 



Museum. 

 12 Ceylon ; coll. F. Layard, Esq. 



6 Ceylon ; coll. E. L. Layard, Esq. [A. S. B.]. 

 10 Trichinopoly ; coll. H. F. Blanford, Esq. 



2 Nilgiris ', ex c. India House Museum (sent as " B, alba, Prideaux"), 

 25 South Arcot and Kollamj coll. Colonel R. H. Beddome. 



subvar. biangulata, nov. 

 1 Madras ; ex c. Madras Museum. 



var. abnormis, nov. 

 20 Bangalore ; coll. G. Nevill, Esq. 



var. (? dist. sp.) 

 1 Sicrigali [?] ; ex c. Dr. T. Oldham. 



var, (? dist. sp.) 

 1 Penang; coll. Dr. P. Stoliczka. 



