ee 
48 KANSAS UNIVERSITY QUARTERLY. 
of the concavity being at about 45° to the shaft of the bone. The 
two articular surfaces are gently concave and oblique, the posterior 
elongate oval in shape and extending to the inferior produced por- 
tion of the bone, which overlaps the inferior part of the shaft of 
the metacarpal when fully flexed. The anterior articular surface 
is narrower and situated more dorsally. The two surfaces are 
placed obliquely on the shaft, corresponding to the obliquity of the 
head of the metacarpal. The upper border of the, bone has a 
prominent tuberosity on the beak, separated by an oblique notch 
from the thickened upper border of the bone. The notch is doubt- 
less for the insertion of muscles. The distal end of the bone is 
curved downwards, the inferior border of the articulation reaching 
about a half an inch below the lower border of the shaft. The ar 
ticulation is at right angles to the shaft of the bone with the upper 
angle broadly rounded. Doubtless in life the surface was oval in 
shape and like the two following bones. 
Measurements: 
Vent ee ui an EM ROH ub OO da tO Oni Ui 
Breadth at.proximal extremity...) 6. 07 65 65 
BCA UH OL Sia ty suieie Gall Gy) Melluitani rey ming aC 27 24 
Diatneter anterior condyle wi iiss eee. 35 35 34 
A partial description of the ‘pelvis and leg has been given in a 
previous paper in this journal,* to which the reader is referred. 
Second-fourth wing phalanges. 
The second and third wing phalanges can not be distinguished 
from each other, save by size; nor can the side to which they be- 
long be determined in the crushed specimens. They are most 
dilated on the proximal end, the sides narrowing to near the prox- 
imal third of the bone, whence they are nearly parallel or gently 
divergent to near the distal extremity. The proximal articular 
surface is concave and transverse to the long axis of the bone. 
This surface reaches quite to the inferior border of the bone, which 
is here curved downward. ‘The upper border, for a short distance, 
is flattened and convex, with a roughened surface on the proximal 
end for muscular and ligamentous attachments. The terminal pha- 
lanx is curved throughout, ending in a free styloid extremity.. In 
some of the smaller species this bone is straight. 
1951 2205 
Length second: phalangée. iii. vei din 500 485 MM, 
Width prOnimalven di iii vawwia Micon iene ago 46 
Weel CSE SHED Pu cee aN ILL ey el iat alae ine 30 
WACKEHS my SIVA t nears hala ty imine ie TR MBIA Nelda iad 20 
Ienothithind: Dialeme ei) Mia yee pine BBO 
Width proxitnal end iw ee mies wenn 932 
Waibiahed he jopumabtchre-ilMicsnnkd WA MPA OI ARIiCa Ane Jie Ney gS 
WiaiGlth Gis etn ct ie ini te 13 
Length fourth phalange (chord).............. 170 
Width: poomiial semi eMac wiy air we NN, 20 
*Kan. Univ. Quar., if, 79. 
