NO. 1232. OX APHAREUS FUBCATUS— JORDAN AND STARK'S. 723 



Interspinous bones typical; each with a transverse longitudinal 

 lamella of bone, best developed anteriorly. Three supplementary 

 interneurals present anteriorly. The first interhaemal not ditfercnti- 

 ated or much enlarged. 



EXPLAXATIOX OF PLATES. 



SIGNIPICAXCE OF EEFEREN'CE LETTEKS USED OX PLATES. 



p. Parietal. 



pas. Paraspheuoid. 



pf. Prefrontal. 



pro. Prootif. 



pto. Pterotif. 



no. Supraoccipital. 



spo. Sphenotic. 



V. Vomer. 



^ The plates are from drawings made by Chloe Lesley iStarks, Artist of the Hop- 

 kins Seaside Lalioratory. 



