40 



I'lihvosijops paludo.'iu.s. It is larger, less worn, and has, comparatively with 

 the true molars, smooth enamel. 



An upper canine tooth, i-epresented in Fig. 7, is of less size than that in 

 the facial specimen of PalceosyojJS paludosus^ the reverse of the condition in 

 lliis respect of the molar teeth. The canine tootii resembles, in its form an<l 

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

 erate length, and cnrved 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 inntu- 

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

 strong basal ridge internally. The fang is about twice the length of i\\£, 

 crown, and is somewhat sigmoid. 



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

 with those of P. paludosuSy are as follows : 



Autero-posterior diameter of last upper molar . . 



Transverse diameter of last upper molar 



Autero-posterior diameter of secoud upper molar 



Transverse diameter of second upper molar 



Antero-posterior diameter of last premolar 



Transverse diameter of last premolar ' 



Autero-posterior diameter of second premolar . . . 



Transverse diameter of second premolar 



Leugtli of crown of cauiue 



Autero-posterior diameter of base of cauiue 



Transverse diameter of base of canine 



Diameter of fang of cauiue 



Length of crown of lateral incisor 



Diameter of base of crown of incisor 



Diameter of fang of incisor 



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

 by Dr. Carter in a butte ten miles distant from Dry Ci'eek Canon. Amoiiir 

 llic specimens there is a scries of upper premolars, froin the second to the 



7 G 



