1893.] 



CETACEASr GENUS MESOPLODOX. 



221 



Fm. 1. 



ir^fL-. 



~-\f ~~"^"S^^^. 



,5.0C, 



Upper surface (one fourth the natural size) of the cranium of a very young 

 specimen (A in the list, p. 216) o^ McKcrplodon grayi, Haast. 



Sections of this rostrum at a and h arc represented on Piute XIV. figs. 2 a, 2 b 



respectively. 



OT^r/". and jym.Tf., the maxillary and prcmaxillary furamina; gib., gibbosity 

 of the premaxillaries ; s.oc, pupraoccipital ; nixjl., maxillary flange ; 

 meth., mesethmoid ; mx., maxillary bone. 



