508 



Mr. D. M. S. Watson on the Cynodontia, 



back to the pineal foramen by the wedge-shaped posterior 

 ends of the frontals and overlapped externally by the 

 postorbital. 



The frontals are unusually large, but are completely 

 excluded from the orbital margin. The postorbital, prefrontal, 

 lachrimal, and the orbital end of the jugal agree exactly with 

 those of Gomphog txaihus. The nasals are large bones, only 

 very slightly expanded caudally; in correlation with the 



Fte. 1. 



Galesaurus planiceps, Ow. The type-skull viewed from above, x 1. 



Fit., frontal ; Mx., maxilla ; Na., nasal ; P.O., postorbital; 

 Pjr.F., prefrontal; Sq., squamosal. 



great width of the snout they are wide throughout their 

 length. The anterior margins of the nasals are nearly 

 straight lines placed at an angle of about 45° with the mid- 

 line of the skull. The nostrils in consequence look forward 

 and outward and not at all upward. 



The squamosal is a large very massive bone which articu- 

 lates powerfully with the end of the paroccipital process, and 



