MOLLUSCA OF INDIA. 69 
This shell is very abundant at Lailangkote among the large 
weathered masses of granite there ; but it was found also at Mairang, 
Teria Ghat, Maotherichan Peak, and Mokarsa. 
From one of these dried specimens I have been able to extract 
the labial ribbon and jaw, which I figure on Plate XX. The 
central tooth is tricuspid, the centre cusp long; the next five 
median teeth are rather broad, pointed, long, with small denticles 
on both the outer and inner basal sides; the sixth and seventh 
are similarly tricuspid; from the eighth outwards all are bicuspid, 
but the outer cusp never reaches to the same length as the inner. 
In this respect this dentition differs from that of Macrochlamys. 
The dental formula is 
269 28 Toe 2*. 26 
The jaw is simple, the cutting-edge concave, with a low convexity 
in the median area. 
The mantle-lobes could not be made out in this specimen. 
The central and median teeth are thus as in Kaliella and the 
formula is the same; the only difference lies in the laterals being 
bicuspid in this species. This character of the odontophore, together 
with the keeled form of the shell, shows that it should be placed in 
that subgenus together with other species on Plate XV. 
Two specimens of this shell have been sent me by Mr. G. Nevill 
(collected by Mr. Robert in the Naga Hills) as no. 209 of his ‘ Hand- 
list,’ Nanina (Microcystis), n. sp., p. 42, ‘14, Naga Hills, coll. M ajor 
Godwin-Austen, W. Robert, and A. W. Chennell, Esqs.” I do 
not possess a single specimen from that district ; there must have 
been some mixing of shells here. 
KALIELLA KEZAMAHENSIS, ND. sp. (Plate XV. figs. 3, 3a.) 
Locality. Kezamah, Anghami Naga Hills; Gaziphima, Naga 
Hills (C7, GEA"): 
Shell subturbinate, well umbilicated, covered with strong epi- 
dermis, base flat; sculpture rather coarse, decussate, like cloth, the 
transverse ribbing the strongest; colour, specimen bleached; spire 
conoid, sides convex, apex blunt; whorls 53, convex, keeled 
sharply on last; aperture semilunar ; peristome rather thickened, 
very oblique near axis. 
Size: major diam. 4:1 mm., alt. axis 2°0 mm. 
rs 0:16 inch, ,, 0-08 inch. 
T have been successful in extracting the labial ribbon of this 
species, which is the same as that of the preceding (lailangkotensis) 
as regards the central or median teeth being tricuspid, only that 
it does not possess the two transitional teeth between the median 
and laterals; and these last are more distinctly unilateral, the outer 
cusp being situated near the base and never rising so high towards 
the point as in lailangkotensis. The formula is 
Dorie 26. 20 
Bil, dkg Bill 
H 2 
