51G 



Mr. D. M. 8, Watson on the Cynodantia. 



passage. With its fellow it forms a process which splits the 

 hinder end of the vomer into two, whilst more laterally it 

 separates the palatine and vomer. 



The ectopteiygoid is a bone of medium size lying on the 

 front of the root of the pterygoidal flange. 



5q. Tab. I.FKr. Qu Qui 



Thrinaxodon liorhinus, Seeley. Occiput of a young individual, x 1. 



There is a secondary palate. 



The stapes, preserved in R. 511, is a short powerful bone 

 with a foramen passing through it. 



The dentition is i. 4, c. 1, m. 6, the last tooth cutting late 

 in life. 



Kg. 8. 



Mx. Nn. 5.Mx. 



Thrinaxodon liorhinus, Seeley. Snout, to show the septo-maxillary, X 1. 



The lower jaw has been described b} r Broom. There is a 

 medium-sized reflected lamina rising from the angular at its 

 point of articulation with the dentary. 



