16 LAND AND FRESHWATER 
first three whorls nearly same diameter ; suture impressed ; whorls 
12, flatly convex, body whorl and aperture 3 of total length ; 
aperture ovate, small; peristome thin; columella sharply curved, 
truncate. 
Size (Damsang): maj. diam. 5°5; length 24°75 mm. 
(Rissom) : s D7 O00: 7, 
This is close to G. baculina, but the whorls are not so flat as in 
that species, and it is very much smaller, 
GiessuLa (RISHETIA) RISSOMENSIS, n. sp. (Plate CLIX. fig. 6 
of a Damsang shell.) No. 3570 B.M. 
Locality. Rissom Peak and Damsang, east of the Teesta Valley 
(W. Robert). 
Shell elongately turreted; seulpture: close irregular striation 
well marked; colour dull white with a pale ochre tint; spire: 
apex blunt and rounded, sides nearly straight ; suture impressed ; 
whorls 10, the embryonic large and rounded smooth, sides flatly 
convex ; aperture ovate; outer lip with a good deal of convexity ; 
coli mellar margin very slightly convex. 
Size (Rissom Peak): maj. diam. 6°25; alt. axis 24:5 mm. 
I have this preserved in spirit; the animal is pale coloured 
throughout. The specimens are not fully grown, the larger apex 
distinguishes it at once from G. baculina. It approaches 
G. harmuttiensis of the Dafla Hills, but the apex of that shell is 
finer, the embryonic whorls being closer together. Specimens 
were also obtained on Rissom Peak. 
GrissuLA (RisHETIA) HAsTULA, Benson. (880.06.1.1.) (Plate CLXI. 
fiz. 16); (No. 16.9.ii1.15 B.M.) (Plate CLXI. fig. 17); (for apex 
enlarged, Plate CLXIII. figs. 9, 9 a, 10.) 
Achatina hastula, Benson, A. M. N. H. ser, 3, vol. 5 (1860) p. 461. 
Original description :—‘ Testa turrito-subulata, tenwi, oblique 
capillaceo-striata, fusco-cornea, niidula; spira subulata, apice obtuso, 
sutura profundiuscula ; anfractibus 9, primis convewis, postremis 
conveaiusculis, ultime 2 teste attingente; apertura vie obliqua, 
ovato-elliptica, peristomatis marginibus callo, tenui juietis, dextralr 
recto acuto columellari arcuato calloso albido, bast oblique truncata. 
“Long. 124, diam. 33 mill.; long. apert. 33 mill. 
‘Habitat ad Pankabari, prope Darjiling, raro. Teste W. T. 
Blant. 
‘‘(f amore slender form than the large Ach. tenuespira, B., the 
whorls increasing very gradually, and not attenuate towards 
the upper part of the spire as in that species.” 
This species was originally found by W. T. Blanford at Punkabari 
at the foot of the Darjiling Hills. 
It has been recorded by Theobald and Stoliczka as occurring in 
Burma, Kumah Hill and Maii, Sandway District, Arakan (repeated 
