172 



MR. D. M. S. WATSON ON 



Super-Family Pariasaurid^e Seeley. 



Diadectomorphs with a long low brain-case. Tabulars and 

 dermo-supraoccipitals on the dorsal surface. Large post-temporal 

 vacuities. Otic notch secondarily obliterated. Inner ear sepa- 

 rated from cranial cavity by bone. 



Vertebrae with heavy neural arches. Pectoral limb advanced 

 in the nearly vertical position of the fore arm in life. Pelvic 

 girdle advanced in the expanded backwardly sloping ilium. 



Pariasaurus Owen. IT. Permian, S. Africa. 

 Propappus Seeley. 



Anthodon Owen. . ,, ,, 



Bradysaurus Watson. M. Permian, ,, 

 Embrithosaurus Watson ,, ,, 



Elginia E. T. Newton. IT. Permian, Scotland. 

 Pariasuchus Broom. ,, S. Africa. 



? Sclerosaurus H. v. Meyer. L. Trias, Switzerland. 



Super- Family Procolopiionidj3 Seeley. 



Diadectomorphs with a short high Sphenodon-like brain-case. 

 Tabulars partly on the occipital surface. 

 Vertebrae with heavy neural arches. 



Fore limb specialised in the loss of the screw-shaped glenoid 

 cavity. 



Procolojihon Owen. L. Trias, S. Africa. 

 Telerpeton Mantell. M. Trias, Scotland. 

 Koiloskiosaurus v. Huene. L. Trias, Germany. 



Order Capitorhinomorpha, nov. 



Cotylosaurs with an obliterated otic notch and vertically 

 placed quadrates. 



Super- Family Captorhinid^e. 



Captorhinomorphs with short high brain-cavity, widened 

 supraoccipital (inner ear placed low down ?). Dermo-supra- 

 occipitals on the occipital surface. Stapes perforate, with a very 

 large foot-plate articulating with pro-otic, paroccipital, basi- 

 sphenoid, and basioccipital, and distally reaching the quadrate. 



Limbs primitive. 



Fam. Captorhinin^e. 



Captorhinus Cope. Artinskian, Texas. 

 Labidosaurits ,, ,, ,, 



? Faill. PARIOTICHIDiE. 



Pariotichus Cope. Artinskian, Texas. 



Isodectes ,, ,, ,, 



Puercosaurits Williston. Artinskian, New Mexico. 



