2j6 



NEW YORK STATE MUSEUM 



illaries, as already described. The body of one of these bones is 

 slenderer along its middle length, separated by a wide interval from 

 its fellow, and half the distance from the vomer (v). 



Its " ascending process " is short, and is carried along the upper 

 vomerine margin, where it unites with the opposite palatine to form 



Fig. 14 



Vma&r 



T*itixtcy 



Fig. is 



•^Q> 



hie 14 Tkull of Spatula clypeata seen from above; mandible removed. 

 Natural size. Letters as in figure 13 



Fig. 15 Under side of the skull of Spatula clypeata; mandible removed. 

 Natural size. Same specimen, with mxp, maxillopalatine, and the other letters as in 

 figures 13 ard 14 



a longitudinal, riblike reenforcement along the upper edge of that 

 bone. It is only in this situation that the anserine palatines meet_ 

 each other. 



The joint that one of these bones makes with the corresponding 

 pterygoid (pt) is somewhat after the order of a modified enarthro- 



