110 Proceedings of the Asiatic Society. [ May, 
Cremnoconchus Syhadrensis, W. BIf. 
1. Side view of a male specimen, partially protruding out of the shell. 
fo 
View from below of another specimen, shewing the sole of the foot, 
3. Anatomy of a female specimen : 
g—radula, k—kidney, li—liver, o—vagina, 
g—egill, h—heart, m—shell retractor, f/—foot. 
ng—obsolete plume, %i—intestines, ut—uterus, pr—muzzle, 
sg—salivary glands, st—stomach ov—oyary, a—anus. 
4, 2 series of teeth of the radula. 5. side view of the centre tooth. 
The animal (figs. 1-2) of C. Syhadrensis has a short rather stout 
body, with a thick subcylindrical foot, posteriorly with the oper- 
culum attached by a slight lobe, just above the base; mantle- 
edge very slightly crenated and somewhat thickened; muzzle 
short, thick, with the oral opening at the end, which is not lobed ; 
tentacles subulate, of considerable length, rather far apart, pointed 
at the end, with large, black eyes on their outer swollen bases ; 
sole of foot roundish or oval, with an indistinct median groove. 
Sexes distinct: male with a large, flatly depressed penis, perfor- 
ated at the end, without any appendage. 
General colour pale whitish grey, slic¢htly darker on the back, 
and with a few irregular darker spots at the sides of the foot, ten- 
tacles usually blackish ; the muzzle appears reddish on account of 
the red colour of the buccal parts. 
The sexes appear slightly to differ in size ; at least none of the 
males were as large as the females. The shell of the largest speci- 
