2o8 
FASCICULI MALATENSES 
with dark-blue or greenish-blue blotches ; the head and tenacles are also a 
dark greenish-blue colour. The peripodial groove is well defined, and 
terminates below the large caudal mucous pore. The foot-fringe is yellow, 
marked with irregular blotches of blue ; the foot-sole a dirty yellow and 
marked by a shallow median groove, possibly due to the alcohol. The 
extremity of the foot terminates bluntly. The specimen measured 3 1 mm. 
in length, and the foot-sole 9 mm. in breadth. The shell was broken, but 
at least a third less than that described and figured by De Morgan. It has 
four whorls, and is thin and horn-coloured. 
This species can no longer be retained in the genus Helicarion^ Fer., 
which seems to be a repository to certain authors for all thin semi-transparent 
shells of three or four whorls. It is closely related to certain species of 
Ariophanta^ in which the dart is represented by a small simple muscular 
organ, and for such I would suggest that the name of Nilgiria^ Godw.-Aust., 
should be retained. 
The Rev. Professor H. M. Gwatkin has very kindly examined a 
mounted specimen of the radula, which I sent him, and he states that he sees 
no reason why the species should not be referred to Ariophanta^ though, as 
he points out, the genus is by no means in a satisfactory state. 
Fhe Generative Organs (PI. XII, Figs. 14-16). 
The vestibule is a wide sac-like pouch, into which the penis and dart-sac 
open at the right and left sides opposite to one another, while posteriorly is 
the opening of the vagina. The receptaculum seminis is a wide tubular sac, 
and of considerable length. The free-oviduct, common duct, and albumen 
gland call for no special mention. The penis is a long thick muscular organ, 
with a definite epiphallus and kalk sac, the vas deferens joining it just below 
this latter organ. The retractor muscle is inserted at the distal end of the 
penis, at which point the latter organ exhibits a slight enlargement. Internally 
there is a large long penis which distally exhibits a peculiar spongy-like cap or 
covering (PI. XII, fig. 16) ; this specimen was in only poor condition, and I 
was therefore unable to make out the structure as clearly as I should have 
liked. The dart gland and dart sac are of the usual form, and in the latter 
there is present a small muscular papilla very similar to those present in other 
species of Nilgiria. 
EUPLECTA, Semper 
6. Euplecta bijug^a (Stol.) 
Rotula bijuga, Stol. J. A. S. B. xlii, p. 14, pi. i, figs. 4-7 ; pi. ii, figs. 16-1 
(1873)- 
Bukit Besar, Nawngchik. 3,000 feet. 
