Cope.l ^^ [Dec. 21, 



Brachymeryx feliceps gen. et sp. nov. 



Char. gen. These are derived from the superior dental series. These 

 are I.'- ; C. 1 ; Prn. 3 ; M. 3 . The true molars have the bases of the crowns 

 little swollen, and the last two of the superior series are but shortly rooted ; 

 the anterior ones have longer roots. The true molars are simply seleno- 

 dont, with the anterior extremities of the external crescents forming promi- 

 nent ribs. The last superior premolar consists of two columns posteriorly 

 and a single trenchant one anteriorly, and the second (first of the series,) 

 is simple and trenchant. The worn posterior face of the canine shows that 

 the first inferior premolar is the functional canine as in Oreodon. There 

 is a very slight diastema in front of or behind the canine, the series being 

 continuous, as in Oreodon. 



This genus differs from Pitheeistes in its canine like first inferior premo- 

 lar, and in the trenchant character of the anterior premolars. With Cyclo- 

 pidius it enters the family group of the Oreodontidce, but approaches the 

 suilline types still more nearly in its probably coossified symphysis man- 

 dibuli. 



Char, specif. This ungulate was a little smaller than the species last 

 described, and is represented in my collections by two nearly complete 

 crania without mandibles. The head is depressed and the zygomata widely 

 expanded ; the palate is wide, and the muzzle short. The infraorbital fora- 

 men is double and issues above the adjacent parts of the second and third 

 (last) premolars. Immediately in front of it the side of the face is concave. 



The projecting anterior angles of the external crescents of the molars 

 are very prominent, forming strong vertical ribs. The external border of 

 the last premolar is only interrupted by a little convexity. The anterior 

 narrow portion of the second premolar is incurved. This tooth is two- 

 rooted ; the first is one-rooted. The canine is small and strongly recurved. 

 It is cylindric at the base, but beyond this is narrowed antero-posteriorly 

 partially from the friction of the first inferior premolar. The anterior face 

 is regularly convex. The first premolar has a very slight internal basal 

 cingulum ; its cutting edge is directed obliquely to the long axis of the 

 cranium. There are no cingula on the other teeth. The enamel of the 

 true molars is smooth on the external side of the crown. There is no 

 enamel on the inner walls of the central lakes. 



Measurements. M. 



Length of dental series to anterior border of canine. 050 



" premolar series 017 



" last true molar 012 



Width of " " 006 



Length of first true molar 007 



Widthof '" " ....006 



Length of first premolar 006 



Widthof " '• -. 006 



Length of canine tooth 009 





