454 THE WASATCH FAUNA. 



The latter are about half as long as the former. Of the ungual jihalanges 

 that of the third or median digit is flat and has a broadly rounded free 

 outline, being a little longer than wide. It is not quite symmetrical, 

 the apex being a little exterior to the median line. The ungues of the 

 second and fourth digits are more narrowed and unsymmetrical, iilthough 

 their apices are obtuse. Those of the first and third are still narrower, and 

 are relatively deeper at the proximal extremity. None of the ungual 

 phalanges are fissured at their extremity, but the second and fourth, and 

 probably the third, have a foramen within the margin on the middle line. 



Measurements of phalanges. 

 I. — Of Hfxt scries. 



M. 



i vertical 009 

 transverse 012 



length on middle line 015 



FiTBtdigit^ .vertical 007 



distal diameter]" '"^** ^transverse 008 



' greatest width 010 



o 1 J- ..< lenjrth ou middle line 0-24 



Second digit < .f, ,. „ .„ 



'^ l width distally Oil 



( length at middle 0-27 



Third digit^.^^^j^.^^_^^^^c vertical .007 



^ < transverse 0H5 



r length at middle 021 



Fourth digit J proximal width (total) 016 



distal J '^■''^''^K''^''**'*^) ^^^ 



^ < depth 007 



r ■ , ,• X < verticil 0085 



proximal diameter < 

 ' < trs 



Fifth digit < 



ransverse 0125 



length at middle 015 



ertical 007 



ransverse 010 



distal diameters \ 

 ( t: 



II. — 0/ second series. 



I length on middle above 013 



Seconddigit^ (vertical 007 



> dist.tl diameters < ^,,. 



'^ ( transverse Olio 



Third digit P<'°«'^'v;.-;v" Z 



" ( width of distal facet 012 



( length above 013 



Fourth digit{ i vertical 0075 



^distal rtiameters^ ,^,,„^,.^.^^^ 0115 



1 1 1 . — Of vngual phalanges. 



014 



Firstdigit-J ( of neck 00C5 



greatest 008 



(length 019 



Second digits - nt neck 010 



< ^idtl" I greatest 014 



(length.. . 



rirst digit-' , of 



/ width X „ 



