THE DOGS SKULL. 
and the occipital condyles. In front 
of the condyles; and” close to, the 
posterior lateral borders of the basi- 
occipital, they are perforated by the 
condylar foramina, through which 
the hypoglossal nerve passes. The 
ex-occipitals are each laterally pro- 
duced into a prominent downward 
and outwardly directed process, the 
par-occipital or paramastoid pro- 
cess, which enters into close relation- 
ship with the auditory bulla, and serves 
for the attachment of the digastric 
and other muscles. Between the ex- 
occipital and periotic, the foramen 
lacerum posterius passes, through 
which the ninth, tenth, and eleventh 
nerves find their exit. 
iii. The supra-occipital is a large, median, 
and somewhat convex-shaped bone, 
forming the superior portion of the 
occipital segment ; anteriorly it passes 
into the parietal segment as a narrow 
prominent ridge, to which the splenius 
and other muscles are attached; the 
squamosal also forms the lateral por- 
tion of this ridge, known as the lamb- 
doid or occipital crest, to which part 
of the temporal muscle is attached. 
b. The parietal segment consists of both carti- 
