The Mammalia of the Vicinity of GinGinnati. 311 



States and British America, in wooded districts ; south to Virginia.* 

 Included, without comment, in Prof. Kirtland's Catalogue of Mam- 

 malia, etc., Ohio Geol. Survey, 1838. 



Family MuKiD-ffi: The Mice. 



10. OcHETODON HUMiLis (Aud. & Bach.) Coues. — Harvest Mouse. — 

 Southern United States, north to Iowa. 



C—A LIST OF EXTINCT MAMMALIA, WHOSE FOSSIL 

 REMAINS HAVE BEEN FOUND IN OSIO, 



Order Ungulata : Hoofed Mammals. 



Family Bovid^ : Bovine Mammals. 



1. Bison latifrons, Leidy. — This animal, a gigantic ox, is repre- 

 sented in the museum of this Society by its fossil horn cores, found in 

 excavating for a bridge pier at Straight creek, Adams county, Ohio, 

 in 1869 : their situation was in coarse gravel, about fifteen feet below 

 the surface. Each core has a portion of the skull attached, which in 

 one case shows a portion of the brain cavity. The following measure- 

 ments are reproduced from the Society's circular in reference to them, 

 which is not generally accessible: 



Length of right horn (core), . . 2 feet, 8 inches. 



Length of left horn (core), . . .2 feet, 7 inches. 



Width of forehead, ... 1 foot, 4 inches. 



Entire length of curvature, . . .6 feet, 8 inches. 



Spread of horns to points in direct line, 6 feet, 1 inch. 



Circumference at base, .... 20^ inches. 



Circumference 10 inches from base, . 16 inches. 



Circumference 16 inches from base, . . 14 inches. 



Circumference 24 inches from base, . 9^ inches. 



Weight, in 1875, 32 and 34 pounds. 

 Allowing one foot to each horn for the projection of the horny 

 sheath or point — and this is certainly a very moderate estimate — 

 we have a spread of more than eight feet, which, in connection with 

 their circumference, will serve to convey some idea of the gigantic 

 size and immense power of the animal to which thej^ belonged. 



* Vide Coues, in BuU. U. S, Geol. and Geog. Survey of the Territories, No. 5. 1876, p. 261. 



