THE SKELETON. 



Si; 



on the end of the vertebral plate, a large ear capsule on 



t 



lit 



n.c. 



hbr.Z. 



FIG. 245. Under surface of skull and arches of 

 skate. After W. K. Parker. 



/.i, First labial cartilage ; R., rostrum; tr., trabecular 

 region ; n.c., nasal capsule ; a.o., antorbital cartilage ; 

 p.pt.q., palato-pterygo-quadrate ; M.c., Meckel's car- 

 tilage ; h.m., hyo-mandibular ; h.br.-L-^, hypobran- 

 chials ; ^./'r.5, fifth cerato-branchial ; c.h., cerato- 

 hyal ; 7.2-4, labial cartilages. 



each side posteriorly, a similar nasal capsule on each side 

 anteriorly, a long rostrum in front, two fontanelles on the 



"33 



