PLATE CXXXVI 



Skull of Menodus giganteus 



One-fourth natural size. (See pp. 523, 531, also PI. CXXXV) 



Am. Mus. 506, female, Big Badlands, Cheyenne River, S. Dak., Chadron formation. Crushed skull and associated lower jaw. 

 The horns are much smaller than in the males of this species. The buccal swellings of the z3'gomata were very slight. The 

 dental characters noted in Plate CXXIV are also shown here. The contour of the lower jaw, although somewhat distorted, 

 conforms in general with that of Menodus giganteus. (See PI. CXXXIX.) 



