Peterson: The Osteology of Promerycochcerus. 209 



portions though somewhat more flattened than in P. carrikeri. The 

 proximal end has the usual strong interlocking facets, the shaft is nearly 

 straight, and the distal trochlea is characteristically of the Merycoido- 

 dont-type. Mc. V was also found, but presents no noteworthy features. 

 There are no phalanges, which I can positively associate with the manus. 



Measurements. 



No. 1230 

 (Type) 

 Mm. 

 Scapula, total height of the fragment 195 



Scapula, antero-posterior diameter at glenoid cavity including 



coracoid 50 



Scapula, greatest transverse diameter at glenoid cavity 33 



Scapula, transverse diameter at neck 30 



Humerus, greatest antero-posterior diameter at head including the 



greater tuberosity 80^' 



Humerus, greatest transverse diameter at the head, approximately. . 50!' 



Humerus, antero-posterior diameter of articulation of head 45 



Humerus, transverse diameter of the articulation of the head 40 



Humerus, total length of fragment 178 



Radius, total length 1 152" 



Radius, transverse diameter of head 4320 



Radius, antero-posterior diameter of head 2120 



Radius, antero-posterior diameter of distal end 2220 



Radius, transverse diameter of distal end 4220 



Scaphoid, antero-posterior diameter 22 



Scaphoid, transverse diameter 20 



Scaphoid, height, posteriorly 21 



Trapezoid, greatest height 15 



Trapezoid, antero-posterior diameter 16 



Trapezoid, transverse diameter 8 



Mc. HI, length 71 



Mc. HI, transverse diameter of head 23 



Mc. HI, antero-posterior diameter of head 21 



Mc. HI, transverse diameter of the shaft in the middle 17 



Mc. HI, antero-posterior diameter of the shaft in the middle 8 



Mc. HI, transverse diameter of distal trochlea 18 



Mc. HI, antero-posterior diameter of distal trochlea including keel. . 16 



Mc. V, length 52 



THE HIND LIMB. 



The pelvis presents a striking difference from that of Promeryco- 

 chcerus carrikeri. Besides being lighter, it is very much shorter, and a 



19 The humerus is crushed in this region which renders these measurements 

 unreliable. 



2° These measurements are taken from No. 1232 referred to in the text. 



