428 ON AN EXTINCT CARNIVORE. 



for the anterior premolars. It remains only to decide whether 

 these differences are to be regarded as of generic or of specific 

 value. If the anterior premolars were merely reduced in size, 

 there need be no hesitation in adopting the latter alternative ; 

 but as pm. 2 differs fundamentally in having only a single root 

 while pm. 1 was probably absent, I am inclined to refer the fossil 

 to a distinct genus, I propose that this genus be named JElurei- 

 dopus, and defined from ^hiropus by the presence of only three 

 upper premolars of which the foremost has a simple root. The 

 species represented by the skull now described may be appropriately 

 named haconi after its discoverer. 



EXPLANATION OF PLATE I. 



Pig. 1. ^lureidopus baconi, gen. et sp. iiov. ; left upper dentition from the outer 

 (A), lower (B), and inner (C) aspects, partly restored from the right side 

 of the fossil, nat. size ; c. canine; _pj». 2, single socket for second premolar; 

 pm. 3, 4, second and third premolars ; m. 1, 2, first and second molars. 



Fig. 2. ^luropus melanoleucus A. Milne-Edw.; left upper canine (c.) and first to 

 third premolars {pm. 1-3), lower aspect, nat. size. 



