446 SKIN AND CUTANEOUS SENSE ORGANS OF AMIURUS. 
PLATE J.—(Continued). 
Fic. 13.—Dorsal aspect of adult brain. 
Fig. 14.—Ventral aspect of adult brain. 
CH.—Cerebral hemispheres. 
LO.—Optie lobes. 
CB.—Cerebellum 
TA.—Tuberculum acusticum. 
LT.—Lobus trigemini. 
LV.—ULobus vagi. 
LI.—Lobus inferior. 
1, 2, 3, &c., indicate the planes of the sections of the brain num- 
bered 1, 2, 3, &c.. on Plate V. 
Olf. Tr.—Olfactory tract. 
N. U1.. II., IV., &c.—Optic, third, fourth nerves, &e. 
N. VIII. ant. and post.—R. ant. and post. of auditory nerves. 
N. sp. I.—I\st spinal nerve. 
lat. V.—Ramus lateralis trigemini. 
ot. —Ramus oticus. 
op. s.—Ramus ophthalmicus superticialis. 
op. p.—Ramus ophthalmicus profundus. 
. c.—Ramus ciliaris. 
. max-mand. and fac.—R. maxillo-mandibularis and facial. 
Fie. 15.—Lateral aspect of brain to show origin of nerves. Additional letter- 
ing : 
R., b,—Ramus buccalis. 
SL.—Supero-lateral strand of trigeminal complex. 
IM.—Infero-medial strand of trigeminal complex. 
G,. IX.. G@. X.—Ganglia of the glossopharyngeus and vagus re- 
spectively. 
Fig. 16.—Lateral aspect after removal of the Gasserian ganglion to show points. 
of emergence of the roots of the fifth. 
Vag. J.—Anterior root of the vagus group. 
Fic. 17,— Medial aspect of the Gasserian ganglion with its branches in situ. 
d—Smaller dorsal branches of the trigeminal complex.. 
PU FO PY PU PD 
