Vol. XXVI, pp. 5-8 January 18, 1913 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



DESCRIPTIONS OF TWO NEW SPECIES OF RUMINANTS 

 FROM THE PLEISTOCENE OF IOWA. 



BY OLIVER P. HAY. 



The materials here described are in the paleontological col- 

 lection of the University of Iowa, and have been submitted to me 

 for study by the Director of the Geological Survey of Iowa, 

 Prof. George F. Kay. 



Cervalces roosevelti sp. now 



Type the greater part of a right antler, with a large part of the right 

 half of the skull, which was discovered in a pit near Denison, Crawford 

 County, Iowa. The age of these deposits was once supposed to he 

 Aftonian, but this is not now regarded as certain. The age can not be 

 late Pleistocene for there are above the deposits two beds of loess. 



Dr. Calvin, in 1908,* referred to this antler as that of a large stag re- 

 lated to Cervalces scotti. A comparison of the figure here presented 

 with the illustration published by Prof. W. B. Scott f will show that the 

 beam of C. roosevelti has nearly twice the length of that of C. scotti. 



Distance from midline of skull to burr of the antler 105 mm. 



Distance from burr to base of ascending branch about .... 300 " 



Distance from burr to outer extremity of the antler (some 



missing) 380 " 



Height of ascending branch from lower border of beam, ex- 

 cluding missing portion 335 " 



Diameter of beam at middle of length 55 " 



The distance from the burr to the base of the ascending branch in C. 

 scotti is only about 180 mm. There does not appear to have been in the 

 Iowa specimen a horizontally directed palmation at the distal end of the 

 beam such as existed in C. scotti. 



* Bull. Geol. Soc. Amer.. Vol. XX, p. 350. 



t Proc. A.cad. Nat. Scl. Phila., 1885, p. 190, fig. 5. 



2— PROC. Biol. Soc. Wash., Vol. XXVI, 1913, (5) 



