394 PROCEEDINGS OF THE ACADEMY OF [1896. 



Above it the beam is somewhat compressed anteroposteriorly, and 

 sends oflf a smaller tine directly anteriorly. The beam in both is 

 entirely smooth. 



Measurements. m. m. 



Diameters of beam No. 1 at base j anteroposterior ; 18 



( transverse ; 16 



Elevation to internal tine ; 13.5 



Anteroposterior diameter of beam No. 2 at base ; 17.5 



Anteroposterior diameter of beam No. 2 at superior 



base of anterior tine ; 15.5 



Transverse diameter of anterior tine ; 14 



Elevation of anterior tine above base ; 27 



The smoothness of the beam of the horns distinguishes this species 

 from the existing species of Cariacus of both North and South 

 America, and resembles the condition seen in the species of Coassus, 

 where the horns are unbranched. The inferior tine originates 

 nearer the bur than in the known species of Cariacus, while the 

 anterior tine is present only in species (C*. campestris) where the 

 interior tine is absent. The longer beam preserved shows no tend- 

 ency to an anterior curvature such as is present in most of the 

 species of the genus. 



The true molar teeth of this species are of about the same size as 

 those of the Virginia deer. 



