30 LAND AND FRESHWATER 
GLESSULA OAKESI, G.-A. 
Records of the Indian Museum, vol, viii. pt. xii. No. 49, p. 617, 
nes. OA, B,C; D. 
Locality. Abor Hills (Captain G. F. T. Oakes, R.E.) No. 3600 
B.M. Type. (Plate CLX. fig. 15 x 1°56.) 
Original Description :—* Shell oblong turreted, shining surface ; 
sculpture: regular somewhat distant incised lines; colour ochra- 
ceous one umber brown ; spire high, sides very flatly convex ; suture 
impressed; whorls 7, flatly convex, proportion of body whorl 
to length 100: 2°56; aperture rather narrowly oval, peristome 
outer lip thickened ; columellar margin slightly convex.” 
“Size: maj. diam, 7:0; alt. axis 16°56 mm.” 
“Two specimens of this species, though rather smaller in size 
and not fully grown, were sent to me from Brahmakund by Mr. 
M. Ogle, No. 3578 B.M. coll. The largest measures 11 x5 mm. 
The species was received alive in 19138, from Captain Oakes with 
other species and dissected.” No doubt the first Glessula so 
received in this country ; a few lived for some months until the 
winter set in, feeding on lettuce, ete. 
“ Animal of Glessula oakest from Rotung (Oakes). The sole of 
the foot is crossed by coarse ridges, there is a very distinct 
peripodial margian (text-fig. 3 A). The genitalia (figs. 8 B, C, D) 
was fairly well seen in one specimen, but more material was sadly 
wanted. The hermaphrodite duct is conspicuous from its size and 
close convolution, bound closely together at its Junction with the 
albumen gland. ‘he penis is very short with a short stout flagel- 
lum terminating in three blunt knots ; it thus differs from what 
1 have been able to see in other species. ‘The vas deferens is 
given off from near the head of the penis, the spermatheca was not 
seen.” 
«This species (G'. oakest) is the same as the one recorded from 
Rotung as G. botellus, Bs., of Southern India by Mr. H. B. Preston 
in the ‘Records of the Indian Museum,’ vol. viil., Nov. 1915, 
p. 539; ib is a bare record, in any case remarkable as regards 
range. As I had not noticed this South Indian species among the 
large series sent me from the Abor Hills, | was anxious to see the 
shells which had gone to Caleutta. Dr. Annandale very kindly 
sent these to me (October, 1916), and I have compared them with 
specimens of Gilessula botellus in the Henry Blanford collection 
from the Nilgiris, with the result that I cannot confirm Mr, Pres- 
ton’s determination. This Abor Glessula (oakest) is decidedly 
smaller than G. botellus, and not so tumid, the whorls are closer 
wound, the outer lip is much more thickened than in botellus, the 
larger shell. I have compared the embryonic whorls and made 
enlarged drawings of botellus, Nilgiris (Pl. CXLIII. fig. 1), of 
Mr. Preston’s specimen (Pl. CXLIII. fig. 3), and of the type 
specimen of oakesi (Pl. CXLIII. fig. 2); the difference between 
the first and the two last is very marked, it is unmistakable.” 
