MOLLUSCA OF INDIA. 43 
JADUKAMIA, subgen. nov. 
Shell small, short, solid, regularly ribbed, almost costulate ; 
spire elongately conoid; apex bluntly pyramidal, very rounded ; 
columellar margin short, concave, and abruptly truncate. 
Griessuta (JADUKAMIA) ABNoRMISs, n. sp. (Plate CLX. fig. 22.) 
No. 1034, 06. 1-1. 
Locality. Khasi Hills (Godwin- Austen). 
_ Shell ovate; sculpture: close, regular, strong ribbing, almost 
costulate ; colour ochraceous, shiny ; spire elongately conoid, apex 
bluntly pyramidal; suture well impressed; whorls 4, sides flat, 
the first large; aperture ovate, not fully developed; columellar 
margin vertical. 
Size: maj. diam. 4:0; alt. axis 7°10 mm. 
This shell, together with two specimens of G. crassilabris, was 
sent by me to Wm. Blanford many years ago, as recorded in his 
catalogue ; its peculiar form was not noticed. I then put it on one 
side under the impression it was an accidental variety of some 
species. When going through the collection of Glessule collected 
by me in the Dafla Hills, Assam, I came on another specimen 
among some found on the Shengorh Peak, almost identical with 
the Khasi Hill shell. When one considers the enormous areas——in 
Assam, for instance-—as yet unvisited by a conchologist, and compares 
them with the small scattered spots, miles apart, where often only a 
hurried search was possible, on one day in the year, there must 
be many a species yet to be discovered. More extensive diligent 
search in both the Khasi and Dafla Hills would lead, doubtless, 
to more specimens of this curious shell being found. 
GiussuLA (JADUKAMIA) ABNORMIS, n. sp. (Plate CLX. fig. 23.) 
Locality. Shengorh Peak, Dafla Hills. No. 3370 (Godwin-Austen). 
Shell elongately ovate; sculpture fine, very regular raised 
ribbing; colour pale ochraceous; whorls 4, the first very ample ; 
aperture ovate; columellar margin nearly vertical. 
Size: maj. diam. 4:0; alt. axis 7°20 mm. 
This Glessula is so distinct in shell character from all as yet 
known that I am induced to put it in a new subgenus, which I 
describe above. 
