PALUDINID^. 27 



var. sphsericula. 



Paludina sphsericula, Deshayes, I. c, Camhodia. 



2 Cochin-China; ex c. P. Bouvier, Esq. 



These are, I think, the form called P. sjjJicericula ; tinfortu- 

 nately they are not quite adult ! They present the sharp angu- 

 lation of the columellar margin at base, said to be characteristic 

 of P. rattrei ; may this not arise from the form not being adult ? 

 Long. 24J, diam, 20f mil. 



25. Paludina lurida. 



Paludina lurida, Morelet, Rev. Zool. 1862, Saigon : long. 211, diam. 17 mil. 

 1 Cochin-China; ex c. A. Morelet, Esq. 



Very close to typical P. crassa ; it also much resembles the 

 Tenasserim specimen of P. siamensis, var. burmanica, but is 

 larger, with more exserted spire and less obtuse apex. 



26. Paludina dissimilis. 



Nerita dissimilis, Milller, Sist. Verm. 1774, Loe. ? ; Con. Indica, pi. 77, 

 figs. 2 — 3 ; P.remossii, "Benson," FMl.,Abh. 1846, Meyivar (typog. error 

 for P. prmmorsa, 'Benson, Ms.), and Con. Indica, pi. 77, figs. 8 — 9, Joiin- 

 pore, See. ; juv. = P. carinata, Sicainson, Zool. III. II, 1822, Oanges ; 

 from Philippines and Siam,fide Morelet, Ser. Con. IV, p. 310. 



30 Calcutta, Chandernagar, &c.; coll. G. Nevill, Esq. and Dr. F. Stoliczka, 

 18 Nagpur, Derbund and Salt-Kange; ex c. Dr. F. Stoliczka. 



5 Naini-Tal (?) ; coll. Dr. T. Oldham. 



7 Purneali, Birbhum and Benares ; coll. Dr. J. Anderson, J. Wood- 

 Mason, Esq. and Colonel G. B. Mainwaring. 



1 Sagar; ex Mr. Sowcrby [ex c, Lombe Taylor]. 



This last a magnificent specimen — long. 27|, diam. 21 mil. — 

 scarcely angulate at the periphery, with the white belt sub- 

 obsolete, was labelled " P. olivacea." 



sub var. subobtusa, nov. 



3 Chdndballi ; coll. G. Nevill, Esq. 



The whorls have not the peculiar, convex shape of var. ohtusa. 

 It is probably the P. melanostoma of Benson, Ms., but not of 

 Reeve ! I described it without a name Cat. Moll. Fasc. E., 

 p. 38 : long. 26^, diam. 21 mil. : decollate, 3 whorls only 

 remainine-. 



