Velie O Ne LEE ANATOMY, OF A BURMES.E 
Shu GOR Lie GE NUS 
Agl OF OS”, 
By EKENDRANATH GHOsH, M.Sc., Assistant Professor of 
Biology, Medicai College, Calcutta. 
(Plates xvi—xix.) 
Two specimens of this slug were collected by Mr. F. H. 
xravely, Assistant Superintendent, Indian Museum, from the 
base of Dawna Hills near Thingannyinaung, about goo ft. above 
sea-level, on the 27th November, I1gIT. 
They belong to the genus Atopos, Simroth, and are made 
the type of a new subgenus (Parapodangia) under the name of 
A. (P.) gravely. 
Subgenus Parapodangia, nov. 
An anterior portion of the mantle (notum) (about 4th the 
body length) along the middle line separate from the thin dorsal 
wall of the body beneath. An lW-shaped fold of the integument 
beneath the mouth between the precephalic flap and the foot. The 
lower tentacles fused with the precephalic flap as in Podangia. 
Atopos (Parapodangia) gravelyi, n. sp. 
Colour of notum sepia (with a slight brownish tint) with 
blotches and pinpoint dots of dark brown above, and of slaty gray 
(bluish) with blotches and spots of slaty black below; in the 
middle, a longitudinal row of pale buff blotches above and a 
continuous dark clove-brown band below. The anterior portion 
of the head (with ommatophores, lower tentacles and precephalic 
flaps) is slaty blue, while the posterior portion is ochraceous 
yellow behind. Foot sole pale yellow. Keel prominent, rounded 
and of dark clove-brown colour. 
Length of notum (along mid-dorsal line) 14°7 cm. Height of 
notum I'4cem. Breadth 1°3 cm. Female genital aperture 1°35 cm. 
from male genital aperture. 
ANATOMY. 
I. Body wail. 
The inner surface of the thick mantle in its anterior portion 
where it is separate from the dorsal integument beneath, is very 
vascular and appears to share a prominent part in respiration. 
