201 



Figure 173.— Nasals of Diiweeias Iticare, Marsli (Xo. l.'iGS). 

 a. side view; b. top view; c. front view. 



One-liftli natural .size. 



iMarsh, American Journal of Science and Arts (3), Vol. V, p. 408, May, 1873. 



Fifth Annual Report of the U. S. Geol. Survey, (figures from the present volume, viz:) 

 tiff. 83, p. 279; 124, 125, p. 296, 1884. 

 Lei(ly''(Uintatherium).— Extinct Vertebrate Fauna, p. 334, 1873. 



The type specimen of this species (number 1038) was obtained by 

 Messrs. B. D Smith, J. W. Chew and the autlior, two miles east of Big- 

 Hone Buttes, Wyoming, September, 1872, and September, 1873. 



This specimen consists of a skull, and numerous parts of the skeleton. 



The geological horizon of this species is in the Bridger Beds of the 

 Middle Eocene. 



The remains of this specimen are preserved in Yale College Museum. 



Diiioceras reflexuin. ]\Iarsli, n. s. 



Woodcut : 174, below. 



Figure 174 — Nasals of D\:oceras reflexum. Mar 

 a. side view ; h. top view ; c. front view. 



Oae-fifth natural size. 



In the type of this species (number 1229), the nasal protuberances are 

 small, but prominent, and are directed strongly upward. The nasal bones 

 are completely united to the end, but are there terminated by sutural 

 surfaces, looking nearly downward, and indicating the position of tlie 

 prenasal bones, which have fallen away. The suture between tlie nasal 

 and the premaxillary is evident, behind and below the nasal protuberance. 

 26 



