572 
Fig. 
Fig. 
TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
T2. 
(eh 
80. 
69. 
=I 
7 ow 
—~ 
. 
=I 
Cn 
Buccal bulb from left, “side. Theo sswhe 
oesophageal ganglion and its branches (a—gq), 
and the buccal nerve are shown. x 1. 
Longitudinal median vertical section of arm, 
anger ing brachial artery and nerve, nerve 
ganglia corresponding to the suckers, and net- 
work of fine arteries and veins which surrounds 
thems axle 
Dissection of dorsal surface of head, showing 
the circular nerve which unites the brachial 
nerves, at the bases of the arms. x 1. 
Pruate IX. 
Ventral dissection of nervous system, partly 
diagrammatic. Funnel cut open and turned 
aside, muscular septum removed; the branches 
from ganglia on visceral nerves are shown 
only on the right side. x 2. 
Central nervous system, from left side. Slightly 
enlarged. 
Left optic ganglion and nerve from dorsal 
surface. x l. 
Dissection of gastric ganglion and its branches 
(a—h). The alimentary canal is seen from 
the ventral surface. 
Dissection of the superior ophthalmic nerves, 
and the olfactory nerves from the dorsal 
surface. The skin and superficial muscles 
have been dissected away and turned back, 
showing the muscular coat of the eye, the 
bases of the arms, and the muscles covering 
the cranial cartilage. x 2, 
Lateral view of right eye, after dissecting away 
the superficial muscles and skin. Shows 
anterior superior and inferior ophthalmic 
nerves. x 4. 
Buccal mass and central nervous system, dorsal 
view. The course of the labial (a—d) and 
buccal nerves may be seen. x 1. 
