igoi.] Gidley, The North American Species of Eqims. 137 



pacificus being much more like E. cabaUiis. E. complicatus also 

 resembles E. caballiis in this respect. 



,) 



Fig. 26, Occiputs of — A , Equns scotti ; B, Eguus cabalhis. 



Equus giganteus, sp. nov. 



Type Locality. — Southwest Texas. 



Type. — Superior molar (m^). (No. 8616, Coll. Am. Mus.). This tooth wa& 

 referred by Professor Cope to E. crenidens. 



Description. — There is a very large tooth, now in the American 

 Museum (Cope) collection, from southwest Texas which Cope 

 described and figured, referring it to E. crenidens., but which 

 differs in every respect, except the small size of the protocone^ 



Fig. 27. Equus gi^anteus^ sp. nov. Type. Superior second molar m^ (No. 8616, Coll. 

 A. M. N. H.^. A, triturating surface; ^ ', section cut about three-fourths of an inch 

 below. 



from the description of the Mexican tooth upon which this species 

 was founded. Its very much larger size; the lack of the charac- 



