M. 



Chord of femoral trochlea and condyles 038 



Width trochlear groove 013 



" condyles *029 



' tibia proximally 038 



Diameter do. antero-posteriorly 039 



shaft, .050 M. from end 017 



distal extremity transversely 026 



antero-posteriorly 018 



Length patella 025 



Width " 015 



Length astragalus 030 



Width " above 016 



" distally 017 



" " neck 012 



" cuboid facet of calcaneum 016 



Depth " " " Oil 



Widtji of a second metacarpal (shaft) 012 



Depth " " (head) 014 



Width " distal end 010 



Length proximal phalange 0290 



Width proximally 0100 



. " of a penultimate do 0085 



Length " " .0110 



Length ungueal phalange _.0150 



Width medially 0065 



" proximally 0070 



Length crown of canine tooth (worn) 0200 



Diameter of base fore and aft y . .013 



" premolar (1) " , 006 



Length crown do '006 



" base premolar (2) Oil 



Height crown 4< 009 



Length crown true molar 018 



Width " " 008 



Height of cutting edge 005 



There are no cingula on the teeth, and the enamel is perfectly smooth. 

 The appearance of the crowns as well as the bones indicates an adult 

 animal. 



The bones of this animal were found together on the bluft's of Cotton- 

 wood Creek, Wyoming, by myself while attached to Hayden's Geological 

 Survey of the Territories for 1872. 



SYNOPLOTHERIUM. Cope. 



Proceedings American Philosophical Society, 1872, 488 (published 

 August 20th). 



Represented as yet by a single species, which is known from frag- 



