1297. THE OSTEOLOGY OF THE CAPROID FISHES-STABKS. 567 



The prootic forms the greater part of the myodome and auditory 

 capsule. 



A small basisphenoid bridges the lower part of the anterior opening 

 to the brain case between the prootics. It has a small tubercle 

 developed on its anterior edge, ])ut it has no descending process. 



CRANIUM OF ANTIGONIA KUBESCENS. 



(lis alisphenoid. 

 60 basioccipital. 



e ethmoid. 

 eo exoccipital. 

 epo epiotic. 

 fr frontal. 

 na nasal. 



p parietal. 



pas parasphenoid. 



pf prefrontal. 

 pot pterotie. 

 pro prootic. 



so supraoccipital. 

 spo sphenotic. 

 V vomer. 



The alisphenoids are united with each other and widely separate 

 the upper and lower parts of the anterior opening to the brain case. 



The pterotie sends a thin wing of bone downward and the opisthotic 

 is developed over the posterior edge of its base. The posttemporal is 

 securel}' attached at its lower end to the opisthotic. 



