1873.] i J- [Cope. 



Width neural canal do 030 



C fore and aft 040 



Diameter of centrum of dorsal < vertical (total) 043 



( transverse 059 



, , e (vertical 018 



" neural arch of same \ , AQO 



( transverse 032 



Santero-posterior '041 

 vertical (total) 050 

 transverse 063 



" head of femur 060 



Length astragalus fore and aft 050 



Width " 065 



Length navicular facet 049 



Width " " 020 



" cuboid " 018 



Length " " 016 



Width (fore and aft) anterior calcaneal 018 



Length posterior calcaneal facet 022 



" fibular (axial) 041 



" terminal phalange 012 



Width do proximally 015 



" distally 030 



Diameter glenoid cavity scapula \ 7? * ca " '; aoa 



fe t transverse nr 080 



From the beds of the Green River epoch near Evanston, Utah (now 



Wyoming). 



METALOPHODON. Cope. 



Proceedings American Philosophical Society, 1872, p. 542. (Pub- 

 lished September 20th.) 



In distinguishing this genus from Bathmodon, I stated that the differ- 

 ences were in the dentition so far as known ; i. e. that the crests of the 

 true molars are not united internally and that the premolars are two — not 

 three — crested. I would now add to the characters, that there are three 

 molars on each side, with transverse crests, which do not unite at the 

 apex, except in the case of the anterior, when they are slightly connected. 

 In Bathmodon there is but one such tooth, the posterior. The inner or 

 third crest of the posterior premolar of that genus is only a cingulum. 

 and is not probably a generic character. 



Metalophodost armatus. Cope. Loe. cit. 

 This species is represented by the greater part of the dental series of 

 both jaws, which I took from a decayed cranium myself, and can thus be 

 assured of their mutual relations. One of the true molars at least, 

 belonged to the milk series, as indicated by the unworn crowns of the 

 successional teeth accompanying. Some of the premolars are but little 

 worn. Referring to my original essay for the general description, I append 

 exact 



