48 

 MiaACEROPS STCERAS (Cope). 



Menodus syceras, Co-pe, 1889. American Naturalist, vol. XXIII, p. 628. 



" " Cope, 1891. The species from the Oligocene or Lower Miocene beds of the 



Cypress hills; Geol. Survey of Canada, Contr, to Can. Palseont., vol. Ill, (quarto), pt. I, 

 p. 18, pi. VII, fig. 2, pi. VIII, figs. 4 and 5. 



Titanotherium syceras, Osborn, 1896. The Cranial Evolution of Titanotherium ; Bulletin 

 Amer. Mus. Nat. Hist., vol. VIII, p. 193. 



The type material of this species consists of the c'oossified nasal bones of three individuals, 

 with a right horn, preserved in one of the specimens. Cope's description, with figures, 

 appeared in part I ot this volume 



A separate left horn collected by T. C. Weston in 1884, closely resembles in shape the 

 right horn with attached nasals, and is assigned to this species. The transverse subangulation 

 of the surface between the horns, and the basal flattening of the horn on its antero-exterior 

 surface, are well marked. 



FIG. 9 



xi 



FIG. lO 



