520 



On the Structure, fyc., of the Fossil Reptilia. [May 14, 





strongly in the several parts of the skeleton, by the new evidence. 

 The shoulder girdle is more Labyrinthodont than was previously 

 supposed, the skull is more Reptilian, and the pelvis and limbs are 

 more Mammalian, though with some resembance to Dinosaurs. 



From further evidence of the structure of the skeleton in Procolo- 

 phon, the author regards that type as a member of the Pareiasauria, 

 rather than as forming a distinct sub-order. It also has four sacral 

 vertebrae. 



The divisions of the Anomodontia are grouped as 



Theriodontia. 



Placodontia. 



\ 



Dirvnodontia. 



Endotbiodontia. 



/ \ 



Pareiasauria. Mesoaauria. 



The relations of the Auomodontia to other Vertebrata are expressed 

 in the following grouping : 



