OF THE RED CRAG. 



21 



fig. 2; and the lower or palatal contour rises toward the upper line of the snout, and this in a 

 way that seems not to be due to friction. The post-palatal ridge, due to the confluence 

 of the medial plates of the pterygoids (fig. 2, 24'), forms a deep and sharp carina. In 

 advance of this the vomer appears upon the palate, forming the keel of the ridge there ; the 

 composition of the rostrum at this part is shown in fig. 9, where I4 is prefrontal, 13 

 vomer, 21 maxillary, 22 premaxillary. 



