MOLLUSCA OF INDIA. 87 
Shell, perforation concealed, very globosely conoid, rather swollen 
below, shining, thin; sculpture qtite smooth, glassy ; colour pale 
horny ; spire conical, apex rather pointed; whorls 6, body-whorl 
large, close, and regularly wound, suture adpressed ; aperture flatly 
lunate, small; peristome thin, columellar margin oblique. 
Size: major diam. 4°] mm., alt. axis 2°3 mm. 
a O-l Grinch: = 4,,2 2009 inch. 
MacrocHLAMYS ROBERTI, n. sp. (Plate XVII. fig. 7.) 
Locality. Angauluo Peak, 6777 ft., Burrail range, Naga Hills 
(W. Robert). 
Shell narrowly perforate, globosely conoid, rather flat on basal 
side, polished ; smooth, but transverse lines of growth distinctly 
marked; colour, pale horny brown epidermis; spire conoid; suture 
adpressed; whorls 53, the last flattened below ; aperture lunate ; peri- 
stome thin, oblique and slightly reflected near umbilicus. 
Size: major diam. 4°1 mm., alt. axis 2°0 mm. 
me 0°16 inch, ,, 0-08 inch. 
I name this after one of my assistant surveyors, Mr. W. Robert, 
who has collected extensively and so successfully for me. 
MaAcrRocHLAMYS DORANI, n. sp. (Plate X VIL. fig. 8.) 
Locality. Maotherichan Peak, N. Khasi (H. H. G.-A.). 
Shell closely umbilicated, globosely conoid ; sculpture quite smooth, 
with an indication of ribbing ; colour pale umber-brown ; spire low, 
blunt ; whorls 5, rounded, the first the largest and swollen; aper- 
ture ovately lunate ; peristome thin. 
Size: major diam. 3:3 mm., alt. axis 2°3 mm. 
a O-lS imich,"),°' “O-09rineh. 
A form very close to M. umbraticola, though much smaller, more 
globose, and with a less expanded aperture. 
MacrocHLAMYS TANIRENSIS, n. sp. (Plate XVII. fig. 9.) 
Locality. Tanir Peak, 4400 ft., Dafla Hills (1. H. G.-A.). 
Shell, perforation concealed, globosely conoid, body-whorl large ; 
sculpture polished, quite smooth ; colour pale sienna-brown ; spire 
depressedly conoid, apex rounded; whorls 43, regularly increasing, 
sides slightly convex; aperture vertical, lunate; peristome thin, 
columellar margin oblique. 
Size: major diam. 2°8 mm., alt. axis 1-5 mm. 
u O-d ineh;.” ,. ) 0:06 meh. 
Two specimens only from above locality. One in Indian Museum, 
Calcutta. 
MacrocHiaMys RusticuLa, n. sp. (Plate XVII. fig. 10.) 
Locality. North Khasi (H. H. G‘.-A.). 
Shell minute, very narrowly umbilicated, depressedly conoid, rather 
solid, shining, subangular ; sculpture quite smooth ; colour sienna- 
brown; spire rather flat; whorls 4; aperture subvertical, widely 
lunate ; peristome thickened and very oblique on columellar margin, 
