42 PALUDINID#. 
Subgenus FOSSARULUS, Neumayr. 
Denkschrift, 1881, type F. stachei, Neumayr. 
33. Bythinia (Fossarulus P) marginata. 
Turbo marginatus, Chemnitz, Conch.-Cab. I ;=Paluding costigera, Beck, in 
Conch.-Cab. II, 1852, pl. VIT, figs. 18-19, Bengal, and Con. Indica, pl. 
151, fig. 10 ;= Valvata sulecata, Eyd. §& Soul., Voy. Bonite, 1852; species 
of Fossarulus, fide Brusina, Foss. Moll. Dalmatien, §c., 1874. 
30 Karnal, Conjeveram, & S, India ; coll, W. T. Blanford, Esq., and ex 
. Madras Mus, - 
80 Ceylon ; coll. E. L. Layard (A. 8, B.] and F. Layard, Esqrs. 
G 
subvar. curta. 
Subvar. curta: long. 64, diam, 54 mil. 
A short form, apparently constant, with the spire less pro- 
duced or exserted. 
Typical, common form : long. 7}, diam. 54 mil. 
6 Bangalore ; coll. G. Nevill, Esq. 
Subgenus HY DROBIOIDES, nov. 
Type Bythinia ? turrita, Blanford. 
84, Bythinia (Hydrobioides) turrita. 
Fairbankia ? (an Bythinia? ) turrita, W. 7. Blanford, Proc. Zool. Soe. 
1869, Kyoukpoung—long. 64, diam. 3 mil. ; Nevill, J. A. 8. B., 1881, pl, 
VI, fig. 15. 
1 Kyoukpoung, Burma (type); coll. Dr. J. Anderson. 
A very remarkable form, apparently allied to the Byth. 
meneghiniana, Issel, Att. Se. Torino XXIII, Pl. 1, Figs, 12.13, 
from Persia. ae: 
35, Bythinia (Hydrobioides ?), n. sp. 
1 Kachh ; coll. Dr. F. Stoliczka, 
Both this and the preceding may possibly prove to be more 
nearly allied to Hydrobia than to Bythinia. 
Genus STENOTHYRA, Benson. 
Ann. Mag. XVII, 1856, type 8. delte Bs., for Nematura, Bs., J. A. 
8. B., V, 1836 (not of Fischer, 1813, Genus Orthopt.) ; belongs to Sub- 
Sam. Hydrobiine, fide Stimpson. : ; 
