88 MEMOIRS OF THE CARNEGIE MUSEUM 



in the structure of the manus and the character of the proximal and second 

 series of phalanges. 



Principal Measurements of Fore Limb and Manus. 



Greatest length of humerus 185 mm. 



" transverse diameter of distal end of humeru.s , 41 " 



" length of radius 135 '' 



" " ulna 171 " 



" " ulna below coronoid process 137 " 



Height of olecranon above anconeal process 27 " 



Antero-posterior diameter of olecranon at summit 22 " 



" " ulna just below sigmoid cavity 20 " 



Greatest breadth of carpus 34 " 



Greatest height of carpus, anterior 12 " 



'" breadth of scapho-lunar 24 " 



" depth of scapho-lunar 10 " 



'' length of metacarpal 1 25 " 



" " " II 37" 



" " " III 47 " 



" " , " IV 45 " 



" " " V 35 " 



Combined length of phalanges of digit I., when in position 29 " 



ti (1 <i <i j[ " " " 4g «< 



IC II (< it JJJ U II II g^ 11 



II (I i< <i lY II <i '1 52 '' 



II II II II y a ii II 45 " 



The Hind Leg and Foot. 



Unfortunately the pelvis is not preserved in our skeleton. All the bones of 

 either hind leg and foot however are present and in a good state of preservation, 

 with the exception of some three or four phalanges. 



The Femur. — PI. XIX., Figs. 1 and 2. When compared with the humerus, the 

 femur of Daphoenus is proportionately a little shorter than in either the dogs or cats. 

 The head is directed more vertical than in either of the latter animals. The 

 depression for the lig amentum teres is situated well down toward the lower margin 

 of the articular surface of the head. The neck is constricted and extends inward 

 and upward at an angle of about thirty degrees to the vertical axis of the bone, so 

 that the position of the head is much less horizontal than in recent dogs or cats. 

 The greater trochanter is a little lower than the superior surface of the head. Pos- 

 teriorly and superiorly it is produced into a sharp ridge which partially encloses the 

 deep digital fossa. Externally it is expanded into a broad, rugose area for muscular 

 attachment. Vertically this rugosity is much more extensive than in modern 

 forms and inferiorly it is continued as a sharp ridge of bone extending along the 



