Cope. | 220 [Dec. 21, 
BRACHYMERYX FELICEPS gen. et sp. nov. 
Char. gen. These are derived from the superior dental series. These 
are I.*; C.1; Pm.*; M.°. 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 Pithecistes 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 Oreodontidw, but approaches the 
suilline types still more nearly in its probably codssified 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 smal] 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 
fs. “premolar! seriesnee cee ere Dishes .017 
.. last rue: moans sasiae acerca oles cisleloretcy ots se Oll2 
Width of a Ry 565.5 SOR Cees OF OCS .006 
Length of first true molar .............-0: eis 007 
Width of as FO Sw ec Rte aR P Mencia iol PalereleTens wee O06 
‘wWenothiofe first premolar:y. |. cl.taeee eo a « bls Gal adeatecter, be 006 
Width of ae Sr) «ala sBotaly totater Seeks etbekene cates Beh hte .006 
Length of canine tooth............ pcaobworlad dor False oy 3009 
