On the Dinosaurs of tJie Stormberg, South Africa. 



The carpus is imperfect and the rudimentary phalanx of the 5th 

 digit lost, but otherwise the whole of the left manus is perfect, and 

 the bones are so well preserved that it is possible to fit all the bones 

 in true position so that a better idea of the shape of the hand can be 

 obtained than in any other known specimen. 



The 1st carpale is concavo-convex in front, like the saddle-shaped 

 end of the centrum of the vertebra of a bird, and convex behind. It 

 measures 36 mm. by 24 mm. 



The 2nd carpale is a curved bone with a sharp upper end and 

 a broad square lower end. It fits in between the 1st metacarpal, 

 the 1st carpale, and the 3rd carpale. Its greatest depth is 24 mm., 

 and the lower end measures 13 mm. by 13 mm. 



The 1st metacarpal is short and broad, and is remarkable for the 

 very small size of the inner distal condyle. The greatest length is 

 39 mm. and the proximal breadth 36 mm. 



The 1st phalanx of the 1st digit measures, greatest length 42 mm., 

 proximal breadth 31 mm., distal breadth 27 mm. It is much less 

 twisted than in Gryponyx, so that when the digit is flexed the claw 

 passes nearly directly downwards. When extended, however, the 

 claw is directed about 45 inwards. The claw measures 72 mm. in 

 length, and the proximal end measures 38 mm. by 21 mm. 



The measurements of the other metacarpals and phalanges are as 

 follows : 



Greatest Proximal Distal 



Length. Width. Width. 



2nd metacarpal 49 mm. 32mm. 27mm. 



1st phalanx 28 23 ,, 19 ,, 



2nd phalanx 22 17 ,, 15 ,, 



Ungual phalanx ... 45 ,, proximal end 22 x 13 



3rd metacarpal 45 ,. 28mm. 19mm. 



1st phalanx 18 ,, 16 ,, 13 ,, 



2nd phalanx 16 ,, 14 13 



3rd phalanx 15 ,, 12 ,, 11 ,, 



Ungual phalanx ... 27 ,, proximal end 13 x 10 



4th metacarpal 37 ,, 21mm. 13mm. 



1st phalanx 15 ,, 11 ,, 9 ,, 



2nd phalanx 10 ,, 8 ,, 6 ,, 



3rd phalanx 10 ,, 6 ,, 



5th metacarpal 29 ,, 22 ,, 17 ,, 



1st phalanx 16 ,, 14 ,, 11 ,, 



2nd phalanx rudimentary, lost. 



