78 Records of the Indian Museum. [Vor. VII, 
angle of the cerebral ganglion and from the point below it are 
given off the large flattened cerebro-pleural and cerebro-pedal 
commissures, 
The nerves from the cerebral ganglia are :— 
(1) A nerve to the labial palp of the side. It divides 
into two branches. 
(2) A nerve to the tentacle. It gives off a small branch 
near its origin to the integument on the outer side 
of the tentacle. 
Dissection of Ampullaria globosa: 
I, oesophagus reflected forwards; 2, buccal ganglion (left); 3, cerebral ganglion 
(left); 4, pedal ganglion (left) with otocyst; 5, supra-intestinal ganglion; 6, 
supra-intestinal nerve; 7, infra-intestinal nerve; 8, accessory supra-intestinal 
ganglion ; 9, pallial nerve (left); 10, visceral ganglion; 11, infra-intestinal gang- 
lion; 12, labial palp; 13, tentacle; 14, buccal bulb; 15, osphradium; 16, gill; 
17, ampulla of the heart; 18, ventricle; 19, auricle; 20, kidney; 21, crop. 
(3) A nerve to the eye. It supplies a branch from its 
outer side to the integument of the head. 
(4) A nerve to the buccal ganglion through the interven- 
tion of a nerve from the latter ganglion. 
(5) A nerve to the side of the buccal bulb towards the 
ventral aspect. 
(6) A nerve from the posterior part of the ganglion near 
the cerebro-pedal connective to the body wall at 
the back part of the head. 
