PLATE CXVI 



Skulls of Allops marshi? 

 One-fifth natural size. (See p. 514) 



A, Nat. Mus. 1213, skull E, Big Cottonwood Creek, Nebr., Titanotherium zone, level A 2 (J. B. Hatcher). (If this is skull E of 



the 1887 collection, the locality is as given; if it is skull E of the 1886 collection, the locality is uncertain.) This specimen has 

 small horns and weak zygomata and is probably a female. The grinding teeth are relatively broader than in the type skull 

 and suggest those of B. dispar. 



B, Nat. Mus. 1215, skull A'. This subbrachycephalic skull recalls that of Brontops brachycephalus. Its reference to Allops marshi 



appears somewhat doubtful. 



