18 
CONCHOLOGIA INDICA. 
7. B. lutea, Gray. Annals Phil. 1824, p. 277. — 
B. goniostoma, Hutton MSS. — Paludina pulchella, 
Kust. (not Bens.) ed. Chem. Palud. p. 30, pi. 6, 
f. 19. 
Purneah. 
8, 9. B. Nassa, Theobald, J. Asi. Soc. Beng. vol. 84, 
pt. 2 (1865). 
Shan States. 
10. B. Iravadica, Blanford, Proc. Zool. Soc. 1869, 
p. 446. 
Marshes near Mandelay, Birmah. 
PLATE XXXVIII. 
BYTHmiA. 
1,4. B. Cerameopoma, Benson, Gleanings Sc. 
Calcut. vol. 2, p. 125 (name for species in vol. 1, 
p. 363), as Paludina: J. Asi. Soc. Beng. vol. 24 
(1855), p. 131. — B. Ceranospatana, Prauenfeld, 
Verhandl. Zool. Bot. Wien. 1862, p. 1156. 
Eiver Ken : Coosa River. 
2, 3. B. Travancorica, Benson, An. Nat. Hist, 
ser. 3, vol. 6 (1860). 
Near Quilon, Travancore. 
The minute spiral striolae are characteristic. 
5, 6. B. pulchella, Benson, J. Asi. Soc. Beng. vol. 5 
(1836), p. 746. 
Sylhet. 
This is stated to be the Valvata no. 9 of Hutton in 
the third volume of the Journal of the Asiatic Society 
of Bengal. 
7, 10. B. stenothyroides, Dohrn, Proc. Zool. Soc. 
1857, p. 123. 
Ceylon ; Nilgherries ; Poonah ; Madras ; 
S. Arcot; Trichinopoli, &c. 
8, 9. B. orcula, Benson, MSS. in Frauenfeld, 
Verhandl. Zool. Bot. Wien. 1862, p. 1154. 
Purneah. 
PLATE XXXIX. 
PLANORBIS. 
1, 2, 3. P. calathus, Benson, An. Nat. Hist. ser. 2, 
vol. 5 (1850), p. 349. 
NearMoradabad; Kattiawar; Ceylon ; Cashmire. 
4, 5, 6. P. Trochoideus, Benson, J. Asi. Soc. Beng. 
vol. 5 (1836), p. 742 (Glean. Scien. Calcutta, vol. 
1, pi. 8, f. 10) ; An. Nat. Hist. (1850), ser. 2, vol. 
5, p. 352. 
Barrakpore. 
7, 8, 9. P. coenosus, Benson, An. Nat. Hist. 1850, 
p. 349. 
Near Moradabad: Ceylon. 
10. P. exustus, Desh. Belang. Voy. Ind. Orient. Zool. 
p. 417, pi. 1, f. 11-13 (1834): ed. Lam. vol. 8, p. 
392. — Muller, Synopsis Test. p. 34. P. Indicus, 
Benson, J. Asi. Soc. Beng. vol. 5, (1836), p. 743. 
— Martens, Mai. Blatt. vol. 14, p. 212. 
Universally diffused, from Bombay to Cashmire. 
Otho Muller (Verm. Ter. et. Fluv. pt. 2, p. 157), 
indicated this shell as the Coromandel form of corneus ; 
hence probably the manuscript name of P. Coroman- 
delianus (Kuster, as of O. Fabricius). Chemnitz 
figured it (Conch. Cab. vol. 9, pi. 127, f. 116, 117), as 
the Indian variety of the same species, to which it was 
referred with doubt, also, by Hutton (J. Asi. Soc. vol. 
3). A figure of it appeared in the Gleanings of Science 
(vol. 1, pi. 8, f. 6). 
PLATE XL. 
PLANORBIS. 
1, 2, 3. P. Cantori, Benson, An. Nat. Hist. 1850, 
p. 349. 
Barrakpore. 
4, 5, 6. P. Sindicus, Benson, An. Nat. Hist. (1850), 
p. 350. 
River Indus, Upper Sinde. 
Figured from the type, the only example known 
to us. 
7, 8, 9. P. umbilicalis, Benson, J. Asi. Soc. Beng. 
vol. 5 (1836), p. 741. — An. Nat. Hist. ser. 2, vol. 5 
(1850), p. 341. — Martens, Mai. Blat. vol. 14, 
p. 216. 
E. Bengal. 
10. P. exustus, Deshayes. — See plate 39, f. 10. 
The species is often much flatter and larger than the 
specimen delineated. 
A form with a very contracted aperture was taken 
from tanks near Chanda. 
