49 



Palceosyops paludosus. It is larger, less worn, and lias, comparatively with 

 the true molars, smooth enamel. 



An upper canine tooth, represented in Fig. 7, is of less size than that in 

 the facial specimen of Palceosyops paludosus, the reverse of the condition in 

 this respect of the molar teeth. The canine tooth resembles, in its form and 

 proportions, the corresponding weapon of the bear. The crown is of mod- 

 erate length, and curved conical. It is provided with a subacute ridge in 

 front and behind, defining the smaller inner face from the outer one, and has 

 the base slightly thickened internally. The enamel is nearly smooth, and is 

 somewhat worn on the anterior face. The fang is considerably longer than 

 the crown, less curved, and is in some degree gibbous. 



A lateral incisor, represented in Fig. 5, Plate XXIV, is a strong tooth, 

 somewhat resembling that of the tapir. The crown is conical, with the inner 

 and outer faces defined by ridges, with the base thickened in front, and a 

 strong basal ridge internally. The fang is about twice the length of the 

 crown, and is somewhat sigmoid. 



The measurements of the upper teeth of Palceosyops major, in comparison 

 with those of P. paludosus ; are as follows: 



Anteroposterior diameter of last upper molar . 



Transverse diameter of last upper molar 



Antero-posterior diameter of secoud upper molar 

 Transverse diameter of secoud upper molar .... 



Antero-posterior diameter of last premolar 



Transverse diameter of last premolar 



Autero-posterior diameter of secoud premolar . . 



Transverse diameter of second premolar 



Length of crown of canine 



Anteroposterior diameter of base of cauiue .... 



Transverse diameter of base of canine 



Diameter of fang of canine 



Length of crown of lateral incisor 



Diameter of base of crown of incisor 



Diameter of fang of incisor 



Palieosyops 

 paludosus. 



A small collection of teeth belonging to the larger Palaeosyops was obtained 

 by Dr. Carter in a butte ten miles distant from Dry Creek Canon. Among 

 the specimens there is a series of upper premolars, from the second to the 

 7 G 



