620 ALLIS. (Vou. XII. 
mosing branches to the r. maxillaris superior trigemini, passes 
under the articular head of the maxillary, and is distributed to 
the lip and to tissues ventral to the premaxillary. During its 
course several branches are sent forward and backward along 
the inner surface of the palato-quadrate arch, the branches, 
like the main nerve, lying dorsal and external to the entoptery- 
goid and the other dermal bones of the inner surface of the 
arch, but ventral and median to the cartilage of the arch and 
the bones formed in that cartilage. The main nerve may 
come to the upper surface of the autopalatinum, and hence to 
the upper or external surface of the arch, near the lateral edge 
of the autopalatinum, and hence of the arch, but it is for a 
very short distance only, and the branch or branches given 
off during this part of its course reénter the autopalatinum 
from its upper surface. In a 40mm. specimen in which the 
nerve was traced it lay between the cartilage of the arch and 
the forming dermopalatinum ; in a 44mm. specimen it pierced 
the cartilage near its edge. In one specimen it was double on 
both sides of the head as it issued from its foramen, the two 
branches or parts soon uniting again. 
The r. palatinus anterior facialis (paf) after its separation 
from the posterior nerve continues forward in the palatine canal 
accompanied by the r. pharyngeus glossopharyngei and a branch 
of the internal carotid artery. It soon gives off a large branch, 
which comes to the outer surface of the base of the skull and 
runs forward along the edge of the skull, ventral to the vomer, 
toward the end of the head. Somewhat further forward the 
glossopharyngeus leaves the palatine canal, and with or with- 
out a branch of the facialis, comes to the ventral surface of the 
vomer and continues forward in that position toward the end 
of that bone, lying median to the first branch of the facialis. 
The remaining main portion of the palatinus continues forward 
in the vomer, or between it and the chondrocranium, sending 
one important branch, if it be not the main nerve itself, upward 
through the base of the skull in a relatively long canal which 
issues at the median edge of the septomaxillary, between it 
and the median edge of the olfactory perforation of the pre- 
maxillary, as already described. This last branch anastomoses 
