100 



PATAGONIAN EXPEDITIONS: PALEONTOLOGY. 



with a well-defined raised border around the sides and anterior end ; in 

 addition to the general rugosity of the surface, there are several large and 

 shallow pits and, in particular, one near the hinder border is conspicuous. 

 The dimensions of this plate are : length, 33 mm. ; width of posterior 

 border, 30.5 mm.; of anterior border, 15 mm. 



The imperfect young skeleton (No. 15,390) described in the account of 

 the genus has yielded the following 



MEASUREMENTS. 



Axis, length of centrum 013 First phalanx, digit II, width of prox- 



" " of odontoid process oio imal end 



" width of anterior face 031 First phalanx, digit III, length 



Scapula, width of neck .018 First phalanx, digit III, width of prox- 



Scapula, antero-posterior diameter of imal end 



glenoid cavity 018 Ungual phalanx, digit I, length 



Scapula, transverse diameter of glenoid Ungual phalanx, digit I, width of prox- 



cavity o 1 2 imal end 



Ulna, length 085 Ungual phalanx, digit II, length 



Ulna, length of olecranon exclusive of Ungual phalanx, digit II, width of prox- 



epiphysis 028 imal end 



Ulna, width of sigmoid notch 020 Ungual phalanx, digit III, length 



" " of distal end 009 Ungual phalanx, digit III, width of prox- 



Radius, length 053 imal end 



" width of proximal end 014 Ungual phalanx, digit IV, length 



" " of distal end 016 Ungual phalanx, digit IV, width of 



Carpus, length in median line on proximal end 



" width 027 Ungual phalanx, digit V, length ....... 



Metacarpal I, length 0095 Ungual phalanx, digit V, width of 



" width of proximal end . . . .005 proximal end 



" " of distal end 004 Femur, length from head 



Metacarpal II, length 027 " " from great trochanter. . . 



" " width of proximal end. . .007 " width of proximal end 



" of distal end 008 " of distal end 



Metacarpal III, length 0285 Tibia, length 



" " width of proximal end. . .0095 " width of proximal end 



" " " of distal end 0085 " " of distal end 



Metacarpal IV, length oil Fibula, thickness of proximal end 



" " width of proximal end. . . .008 Astragalus, length 



" " " of distal end 008 " width of trochlea 



First phalanx, digit I, length oil Calcaneum, length 



First phalanx, digit I, width of proximal " " of tuber 



end 004 Metatarsal I, length 



First phalanx, digit II, length 013 " width of proximal end. . . 



.009 



.01 I 



.010 

 .009 



.0045 



.022 



.008 

 .0225 



.0085 



.020 



.OO9 

 .0175 



.008 

 .084 

 .090 

 .030 

 .025 

 .083 

 .027 

 .012 

 .OIO 

 .O2O 



016 



033 

 ,023 

 014 

 .0045 



