284 TBETIAET VERTEBEATA OF THE EATtTM, 



1904, pp. 527-530, pi. xvii. Also text-figs. 88, 89. The dimensions o£ this specimen 

 are given below. 

 C. 8772. Complete and undistorted carapace and plastron. The dimensions of this specimen are 

 given below. 



R. 3274. Plaster cast of the last specimen. 



R. 3097. Somewhat distorted carapace and plastron, incomplete posteriorly, associated with the 

 pelvis (text-fig. 90) . The dimensions of this specimen are given below. 



Presented ly W. E. de Winton, Esq., 1903. 



R. 3273. Nearly complete and slightly distorted carapace and plastron. The dimensions of this 

 specimen are given below. Presented hy the Egyptian Government, 1904. 



C. 9240. Complete and undistorted carapace and plastron of a smaller individual, probably a female. 

 Figured on PI. XXIV. The dimensions of this specimen are given below. 



The dimensions (in centimetres) of the above shells are : — 



0. 8130. C. 8772. E. 3097. E. 3273. C. 9240. 

 (Type.) 



Length of carapace in middle line 87 88 . . 86 49-7 



Greatest width of carapace 76 65-7 (?) 53 63 34-5 



height of shell 447 45-5 47-5 40 + 29-2 



Length of plastron in middle line 77"8 80-7 76 75-5 45-2 



,, „ to end of xiphiplastra .... 85 85-5 78'5 80 48'4 



Width of anterior lobe of plastron 32 43-7 33-5 36-5 21 



„ posterior lobe of plastron 34 42 36 37 22-5 



Length of bridge 38-8 35-5 40 (?) 32 app. 22 



R. 3099. Portion of left xiphiplastral bone, showing form of anal shield. 



Presented hy W. E. de Winton, Esq., 1903. 



The following humeri may belong to this or one of the other species of the genus described below. 



R. 3351. Nearly complete left humerus, described above. The dimensions (in centimetres) of this 

 bone are : — 



Length 18-6 



"Width of upper end 5 app. 



„ middle of shaft , . . 2 



„ distal expansion 5-3 



„ „ articulation 4-2 



C. 9008. Distal half of a much larger right humerus, differing from last in being relatively much 

 wider and at the same time more compressed from above downwards. The dimensions 

 (in centimetres) are : — 



Width of middle of shaft 2-7 



„ distal expansion 7"8 



„ „ articulation 6'3 



R. 3098. Proximal end of a right humerus, similar to R. 3351, but rather larger. 



Presented hy W. E. de Winton, Esq., 1903. 



R. 3098a. Eight humerus, wanting radial side of distal end. Length 18 cm. ; width of middle of 

 shaft 2 cm. 



