126 LAND AND FRESHWATER 
Oxyres castor, Theobald. = O. pollua, var. cherraensis, W. Blf. 
Helix castor, Theob. J. A. S. B. 1859, vol. xxvii. p. 319; Hanley, 
Conch. Ind. p. 13, pl. xxvi. fig. 3 (Nanclai), Khasi Hills. 
Hemiplecta (sec. D) castor, Theob. Supp. Cat. p. 22, = cherraensis, Blf. 
Nanina (Hemiplecta ?) castor, Nevill, Hand-list, p. 48. no, 263, = 
cherraensis, Blf. 
Oxytes castor, Godwin-Austen, J. A. 8. B. 1880, p. 157. 
Original description :—‘‘ Testa lenticulari, subdepressa, via umbili- 
cata, acute carinata, confertim striata ferrugineo-fusca ; anfractibus 
53-6; magnitudinis 1-40-1°60. 
“* Habitat apud Nanclai, ‘Nongklai?’ in montibus ‘ Khasia’ 
dictis. 
“This shell is not common, and I have only a barely adult spe- 
cimen in good condition... .... The keel, too, is a trifle more acute 
and divides the body-whorlin a symmetrical manner, from the shell 
not being so flattened down as in H. owytes. The shell is rather 
stout, and the peristome probably thickened more or less.” 
I have lately seen, for the first time, the type specimen of O. castor 
in Mr. Theobald’s collection, and compared it with shells in my own 
collection, and I am able to state that it is the var. O. cherraensis 
of Mr. Blanford. I give his original description, as it is more de- 
tailed than that of O. castor. The peristome is not thickened in the 
adult shell. 
OxYTES POLLUX, var. CHERRAENSIS, W. BIf. 
Oxytes pollux, var. cherraensis, W. Blif. J. A. S. B. vol. xxxix. 
1870, p. 14, pl. iii. fig. 8. 
Helix cherraensis, Hanley, Conch. Ind. p. 13, pl. xxvi. fig. 6 (“very 
closely allied to, if, indeed, distinct from H. castor”’). 
This is only a variety of Oaytes pollux found in the deep valley 
east of and below Cherra Poonjee. 
Mr. Blanford remarks, “I should not have distinguished this shell 
from NV. polluw, Theobald, had not Major Godwin-Austen assured 
me that the animal is totally different from that of the shell described 
above. It is distinguished by its higher spire, darker colour, and by 
the more marked spiral striation.” I have six specimens, all of a 
ruddy umber-brown, with coarser sculpture when compared with 
specimens from Nongkulong, in the 8.W. Khasi Hills, which are 
pale ochraceous and far smoother. The following note was made 
of the animal:—‘ Of a brown-pink, the pink very rich towards 
the extremity of the foot; tentacles long, 0°65, oval, well deve- 
loped.” 
My largest specimen measures :— 
Major diam. 35:5, minor 32°5, alt. axis 12-0 mm. 
* a a 1:28, ss 0-48 inch. 
Original description:—Testa perforata, depressa, acute carinata, 
lenticularis, tenuis, nitidula, castaneo-cornea, strits incrementi et lineis 
