34 THE OSTEOLOGY OF THE REPTILES 



genera, the supratemporals and tabulars in a few others. Teeth may 

 occur on the coronoids. The postsplenial occurs in but one known 

 genus [Pantylus], as also the intertemporal [Seymouria]. The inter- 

 parietals are reduced and posteriorly placed in a few, and in the 

 latest genera may be vestigial. The lacrimal in Procolophon is small, 

 not reaching the nares. The teeth are usually conical throughout; in 

 some genera they are obtuse and cuspidate; in the Diadectidae the 

 posterior ones are transversely molariform; in no known forms are 

 they sectorial. Doubtless with future discoveries other modifications 

 of the primitive structure will be found. 



