216 THE DESEADO FORMATION OF PATAGONIA 



SPECIMEN 3004 

 Lower dentition 



Distance from premolar I to molar 3 76 mm. 



Molar i, length II mm., width 6 mm. 



Molar 2, length 13 mm., width 6 mm. 



Molar 3, length 13 mm., width 7 mm. 



Height of mandible under premolar 4 30 mm. 



Notogale gen. nov. 



This genus is proposed for the species designated ?Phar- 

 sophorus mills by Ameghino (should probably include ?Phar- 

 sophorus tennis which however never having been figured 

 and not found in our collection I cannot definitely place). 

 While the upper teeth have the same general character 

 as Pharsophorus, they are much more compressed and tren- 

 chant. Upper molar 2 is similar to that of Pharasophorus 

 in having the protocone reduced, and the metacone repre- 

 sented by a long sloping ridge. The last molar is also 

 similar in having the antero-external style, the developed 

 paracone, but the protocone is much less developed, appear- 

 ing only as a ridge. In the lower teeth, however, there is 

 a marked difference, in that the metaconid is lacking on 

 molars, while the talonid is developed into a small basin 

 with a single cusp on the posterior margin. This genus 

 seems to be closest to the Santa Cruz genus Cladosictis. 



Notogale mitis Ameghino 



? Pharsophorus mitis, 1897, Bol. Inst. Geog. Argen., t. 

 18, p. 504. 



Ameghino briefly describes, without a figure, a species 

 in which premolar 4 and molar 3 together measure 14 mm. 



o p'C^F^ I have assigned to this two specimens, the 

 {./ (js P one with pm. 2 incomplete, pm. 3 complete, 



Fig. 142. upper and m. 2 also complete. These teeth meas- 



molars 2 to 4 nat- 



ure the same as Ameghino' s and I think are 

 the same.. There is also a fragment of the upper jaw with 

 molars 2 and 3, though imperfect. From these it appears 



