1908.] 



OF A GENUS OF EXTINCT REPTILES. 



609 



P. haini, and may have been in latei'al contact with each other (text- 

 fig. 1 26). The best preserved is thick at the margin, concave on 



Text-fig. 127. 



Anterior aspect. 

 Text-fig. 128. Text-fig. 129. / \ 



Posterior aspect. 



Lateral aspect. 



Anterior, posterior, and lateral views of caudal vertebra of 

 JPareiasaurus steenhampensis. 



the under side. They may have been inclined obliquely backward. 

 Their extei'nal sxii'faces have the same type or ornament as the 



39* 



