DICYNODONTID^]. 



17 



muzzle, and the facial portion of the moderately long premaxillae 

 devoid of lateral ridges ; supraoecipital with a deep bar above 

 foramen magnum ; inferior aspect of mandibular symphysis rounded. 

 Vertebral centra (when known) with deep terminal cups. Scapula 

 (when known) with the acromial process separated by a notch from 

 the glenoidal portion, and a long emargination on the preaxial 

 border, which is but slightly reflected towards the dorsal aspect 

 (see p. 21). 



Dicynodont. — Dorsal aspect of the right side of the pelvic girdle ; from the 

 Karoo system of the Cape. ^. il, ilium ; is, ischium ; pb, pubis ; of, 

 obturator foramen. In the upper figure the pubis and ischium are repre- 

 sented in their natural position, while in the lower one their whole contour 

 is shown. 



A diagrammatic restoration of the palatal aspect of the Dicynodont 

 skull is given in fig. 4 1 . 



It is probable that at least the majority of the species attained 

 very large dimensions. 



1 In the restoration given by Seeley in the * Phil. Trans.' for 18S9, p. 246, 

 fig. 3, the median processes of the pterygoids are represented as uniting and 

 extending forwards to join the vomer. 



PART IV. C 



