MOLLUSCA OF INDIA, 27 
GLESSULA DIKRANGENSE, n. sp. No. 3404 B.M. (Plate CLX. 
tigen a.) 
Locality. Toruputu Peak, Dafla Hills (Godwin-Austen). 
Shell oblongly turreted; sculpture rather strong striation, close 
and regular; colour dull umber-brown; spire high, apex blunt, 
side straight; suture impressed ; whorls 8, side nearly flat, spire to 
last whorl 100 : 52-2; aperture oval; columellar margin slightly 
convex. 
Size: maj. diam. 7:0; length 17:25 mm. 
“* DIKRANGIA,” genus nov. 
Shell very elongate, small, transparent, delicate, turreted with 
many whorls closely mount and nearly equal in diameter, aperture 
very small, ovate ; ‘animal not known. 
Gressuxa (“ DixRanera”) NEVILLI, G.-A. 
When describing ibe Helicidze of the Dafla Hills (J. A.S. B. 
1876, vol. xlv. pt. 2, pl. vil. f. 12, p. 315) I put this species into 
the genus Opeas. This determination has been followed by 
Mr. G. K. Gude in the ‘ Fauna British India, Mollusca,’ vol. 
1914, p. 860. Closer attention shows the aperture to be decidedly 
that of a Glessula, but the general form departs much from that 
genus—so much so, it might well be placed in a distinct sub- 
section. ‘This would be better left to be done when the anatomy 
of the animal is known to us. I think it better to consider it a 
new subgenus, and name it “ Dikrangia,” coming after 'G. baculina 
and G. yaroense. 
The original description, which is as follows, was short and 
requires amendment—it was not drawn up on one-type shells, but 
on a set—olten done in those early days. 
Original description :—** Shell turreted, very elongate, pale, silky 
with a green tinge, older specimens of a pale straw- Zpgllone covered 
with a thin epidermis, beautifully striate under lens. Whorls 11-12, 
moderately rounded and very gradually diminishing in size to the 
apex, which is bluish ; ; suture ‘impressed ; ; aperture angular above, 
outer lip thin. 
“ Alt. 0°55"; major diam. 0-10". Largest specimens 0:90". 
“ Habitat. This very delicate elongate shell was common on 
Toruputu Peak, but far finer specimens, equal in size to the figure, 
were obtained on the banks of the Pichola Nulla out in the plains. 
I am not satisfied with this figure, the whorls being rather too 
flat and the apex too sharp. 
“T have named this shell after my friend Mr. G. Nevill, with 
whom I have now so long been associated in the study and 
collection of Indian land-shells.” 
