160 J. B. Johnston 
The rami from the extra-capsular ganglia will now be described, 
beginning at the cephalie end. The first ramus (Fig. 3) is a large one 
from the dorso-lateral angle of the ganglion (325) which courses outward 
and upward around the capsule and runs backward on its dorso-lateral 
surface. From this surface of the capsule a septum runs to the skin, 
dividing the dorsal from the lateral museles, and a row of nine 
neuromasts is found along the line of attachment of this septum. 
The nerve seems to grow rapidly smaller and branches are seen 
going out in the septum to the neuromasts. The nerve continues 
around the capsule and joins the ganglia of the lateral line and 
glossopharyngeus nerves in a manner which will be deseribed in 
connection with those nerves. This is the VII—X anastomosis, which 
avises from the ganglion in the same way as in ZLampetra. In its 
connections with the postauditory nerves it presents noteworthy 
differences. 
The second ramus is formed almost at the same level (327) from 
the latero-ventral portion of the ganglion. The ramus becomes 
imbedded in the fibrous tissue surrounding a cartilage, runs outward 
and forward following the direction of the cartilage and Iying mesial 
to it, passes thus beneath the trigeminus ganglion and lateral to the 
motor mandibular ramus, (318) continues mesial to the vanishing 
cartilage, erosses the lateral surface of the mixed mandibular ramus 
which it deeply indents (315—312 Fig. 2), continues forward close 
over the lateral surface of the maxillaris imbedded in fibrous tissue 
(300, Fig. 1), comes to lie latero-dorsal to the maxillaris, and emerges 
from the fibrous tissue into the orbit (278), where it continues forward 
beneath the eyeball. During its course through the orbit it is part 
of the time flattened, part of the time rounded. At 265 it inclines 
laterally, then dorsally elosely related to the fibrous wall of the orbit 
which it pierces at 250 and makes its way out to the skin. Now it 
continues forward beneath the skin in the broad band of connective 
tissue separating the dorsal and lateral museles, just above the border 
of the lateral muscle. The profundus meanwhile lies dorsal to it 
and deeper, mesial to a sinus opposite the lower border of the dorsal 
muscle. The nerve has thus far made no connections with other 
rami nor given off any branches. It runs forward directly beneath 
the row of neuromasts which begins at the cephalie border of the 
cornea (20, p. 44) and supplies those of this row. Those of the row 
of nine which after a short interval continue to the snout are supplied 
by the profundus as described above. The relations show that the 
