368 TUE WASATCH FAUNA. 



like tuberosity. The external fiice above the ulna is slightly concave, and 

 is separated from the ulnar tace by an angular ridge. The internal face 

 has the same relation to the inferior face. The scapho-lunar facet is undi- 

 vided, and has a wide crescent shape, the concavity above and the angles 

 rounded. 



As in the otlR-r species, the lunar bone is distinct from the scaphoid. 

 The cuneiform is produced outwards into a narrow tuberosity. The magnum 

 is small, and has a subquadrate anterior face. It rises above, as usual, and 

 has a short posterior tuberosity. The metacarpals are not long, and the 

 median ones are rather robust. The posterior keel of the distal extremity 

 is obtuse and somewhat oblique, and separates parts of the condyle of 

 unequal width and prominence. The supracondylar transverse groove is 

 not deep, and the superior face of the condyle is rather flat. The head of 

 a metacarpal has but one proximal facet, which is convex anteroposteriorly. 

 There is a band-like lateral facet at right angles to the proximal, below which 

 the bone is excavated abruptly. A phalange is wide and depressed, appro- 

 priately to the flat claws. Its distal condyle is not recurved above. 



Measurements of anterior limb. 



M. 



Lcii)^lli of hiiraerus (partly iulerfiitiiil) • 165 



TniiiHVerse di.imeter of head (partly Inferential) 041 



Width at cpicondyles 0,j,5 



,,..,., <. , , (anteriorly 023 



W id th of condyles < . ; „.,- 



( posteriorly i "■^o 



. ,., , , < iiitomally 031 



Aiiteropiwterior width condyles < _ .Z .„ 



( externally O^y 



Leii({th of ulna -^^ 



L(ni;tli of olecranon 0/0 



Depth of (decranon at ex'reniity of olecranon 026 



Depth of olecranon at coronoid process 051 



Depth of olecranon at head of radius 026 



Depth of olecranon at middle of shaft 019 



Width of cuneiform facet of ulna 013 



Len);lli of radius 202 



(vertical 0185 



Diameters of head of radius < ' ' ,,„. 



( traiisvers* "•" 



Width of shaft at middle 020 



Width at distal end 039 



Width of carpal facet ^^'* 



Depth of carpal facet 015 



Depth of face of lunar 015 



Width of face of lunar 013 



Depth of face of cuneiform OH 



Width of face of cuneiform 026 



