XJ. S. GEOLOGICAL SUHVET 



MOXOGRAPH 55 PLATE LXXIX 



SKULLS OF METARHINUS 



(After E. S. Riggs; see p. 421.) One-fourth natural site. A, Metarhinus cria.atus, type 

 (Field Mus. 12194), drawing reversed. B, M. earlei, referred (Field Mus. 12187), "Upper 

 Metarhinus beds" (level Uinta B 1), Uinta Basin, drawing reversed. C, M. riparius, type 

 (Field Mus. 12186), "Upper Metarhinus beds" (level Uinta B 1), Uinta Basin, drawing 

 reversed 



