PALUDINIDA. 37 
var, producta (? dist. sp.) 
8 Sdémbhar and Salt-Lakes; ex c. Dr. F. Stoliczka. 
6 Jamalpur; exc. Dr. F. Stoliczka, 
10 Ferozpur ; coll. Capt. R. C. Temple (7, 54). 
var. parvula (? dist. sp.) 
Mordédabad ; ex c. As. Soc. Bengal. 
Jaunpur ; ex c. India House Museum [as “ B. oreula—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. 
Bythinia stenothyroides, Dohrn, Proc. Zool. Soc. 1867, Ceylon ; Con. Indica, 
pl. 88, 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. inconspicwa 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 Kollam; coll. Colonel R. H. Beddome, 
subvar. biangulata, nov. 
1 Madras; ex c. Madras Museum. 
var. abnormis, nov. 
20 Bangalore; coll. G. Nevill, Esq. 
var, (P dist. sp.) 
1 Sicrigali [?]; ex c. Dr. T. Oldham, 
var. (? dist, sp.) 
1 Penang; coll. Dr. F, Stoliczka, 
