4fJ PALUDINID^, 



Subgenus FOSSARULUS, Neumayr. 

 DenJcsch'ift, 1881, ii/pe F. stachei, Neumayr. 



33. Bythinia (Fossarulus ?) marginata. 



Turbo marginatus, Chemnitz, Conch.-Cah. I ;=Paludiiia costigera, Bed; in 

 Conch.-Cab. II, 1852, pi. VII, jigs. 18-19, Bengal, and Con. Indica, pi. 

 151, fig. 10 ;= Valoata sulcata, Eijd. ^ Soul., Voi/. Bonite, 1852; species 

 of Fossarulus, fide Brusina, Foss. IIoll. Dalmatien, Sfc, 1874, 



30 Karnul, Conjeveram, & S. India ; coll. W. T. Blanford, Esq., and ex 

 c. Madras Mus, 



30 Ceylon ; coll. E. L. Layard [A. S. B.] and F. Layard, Esqrs. 



subvav. curta. 

 Svibvar. curta : long. 6|, diam. 6| mil. 



A sliort form, apparently constant, with the spire less pro- 

 duced or exserted. 



Typical, common form : long. 7|, diam. 6| mil. 



6 Bangalore ; coll. G. Nevill, Esq. 



Subgenus HYDROBIOIDES, nov. 

 Type Bythinia ? turrita, Blanford. 



34. Bythinia (Hydrobioides) turrita. 



Fairbankia? (an Bytbinia? ) turrita, W. T. Blanford, Proc. Zool. Sac. 

 1869, Kyouhpoung — long. 6^, diam. 3 mil. ; Nevill, J. A. S. B., 1881, pi. 

 VI, fig. 15. 

 1 Kyoukpoung, Burma (typo) ; coll. Dr. J. Anderson. 



A very remarkable form, apparently allied to the Byth. 

 meneghmiana, Issel, Att. Sc. Torino XXIII, PI. 1, Figs. 12-13, 

 from Persia. 



35. Bythinia (Hydrobioides ?), n. sp, 



1 Kacbb ; coll. Dr. F. Stoliczka, 



Both this and the preceding may possibly prove to be more 

 nearly allied to Hydrohia than to Bythinia. 



Genus STENOTHYRA, Benson. 



Ann. Mag. XVII, 1856, type S. delta Bs., for Nematura, Bs., J. A. 

 S. B., V, 1836 (not of Fischer, 1813, Oenxts Orthopi.) ; belongs to Sub- 

 fam. HydrohiincEffide Stimpson. 



