Bison Latifrons, Leidy. 2 i 



The cores were returned to their owners and were purchased 

 from him for the collection of the Society through the negotiations 

 of Dr. Norton, to whom the Society owes a debt of gratitude for 

 securing these very valuable specimens for the Society Museum. 

 The money for their purchase was raised by subscription among a 

 few of the members. 



The following measurements show them to be almost equal in 

 size to the specimens upon which the species was established : 



Length of right core 2 feet 8 inches. 



" left " 2 " 7 " 



Width of Forehead, i " 4 " 



Entire length of curvature, 6 " 8 



Spread of horns from tip to tip, 6 " i " 



Circumference at base, 2o|^ 



" 10 inches from base, 16 " 



Casts were prepared for purposes of exchange, one pair ot 

 which remains. 



As a matter of interest and for purposes of comparison, I 

 wish to notice a few other specimens of this species which have, 

 from time to time, been described. 



In "Contributions to Extinct Vertebrate Fauna," Leidy, vol. i 

 p. 253, Dr. Leidy describes a specimen which he refers to Bison 

 latifrons found by Calvin Brown and son Wilfred, of San Fran- 

 cisco, in a bed of blue clay 21 feet below the surface in Pilarcetos 

 Valley, Cal. The following measurements of this specimen and 

 of llie Bison americanus are given. 



B. latifrous B. Americanus. 



Distance between tips'of horn cores, ..36 inches 26 inches. 



" " basesof " " . . 15^ " 12 " 



Circumference at base, 14 " n 



Length along lower curvature, 14^ " 12 " 



A fragment of fossil cranium with horn cores attached, de- 

 scribed by Dr. Carpenter, has also been identified with Bison lati- 

 frons ; it measures as follows : 



Circumference at base of horn core, 17 inches. 



" 18 inches from base, 14 " 



From one broken extremity to the other of the cores 56 " 

 Width of frontal bone between the cores, 14 " 



