EXPLANATION OF PLATE. 



Plate XLVI. 



Fig. 



1. Restoration of skull of Hi/diuixiicIiHS IVIimtKl, x 0'43. 



2. Restoration of skull of Alopecodoii priscm, x about J. 



3. Back of base of skull of Blnnc^uchus Whaitsi, slightly reduced. 



sphenoid (= vomer), Pt. pterygoid, Col. columella auris. 



