NOTOGALE 217 



that we have to do with an animal not only smaller than 

 the preceding, but on much slenderer lines. The following 

 are the measurements of the two specimens. 



Specimen 3 1 1 7 



Upper dentition, molar 2, length 8 mm., width 6 mm. 



Upper dentition, molar 3, length 2 nun., width 6 mm. 



Specimen 3060 



Lower dentition, premolar 3, length 6 mm., width 2.5 mm. 



Lower dentition, molar 2, length 7 mm., width 4 mm. 



mi 



Fig. 143. Left mandible -natural size. 



Notogale tenuis Ameghino 



? Pharsophorus tenuis Amegh., 1897, Bol. Inst. Geog., Argen., t. 18, p. 504. 



This species was founded by Ameghino on a single lower 

 premolar 3 which is 3 mm. in length. No further descrip- 

 tion is given and no figure. 



Proborhyaena Ameghino 



Proborhyaena Amegh., 1897, Bol. Inst. Geog. Argen., t. 18, p. 501. 



The genus is founded on a large lower jaw carrying the 

 canine and premolars 3 and 4 and roots or alveoli for the 

 other teeth. It is the largest carnivor recorded from 

 Patagonia, and as large as a small bear. It is not possible 



