STEEEOGENYS CROMEEI. 301 



R. 3190. Imperfect skull, wanting roof o£ right temporal fossa and with palate much crushed. The 

 dimensions (in centimetres) of this specimen are : — 



Extreme length in middle Line 11"4 



„ „ from posterior end of squamosals .... 11'6 



Greatest width i 11 app. 



Width between the ends of the ectopterygoid processes ... 7" 6 



„ of palate 4-9 



Distance from internal nares to tip of nose 5-8 



Least width between the orbits 2 



Presented hy the Egyptian Government, 1904. 



C. 10031. Nearly complete skull, wanting portions of the covering of the temporal fossse and the 

 left quadrate. The dimensions (in centimetres) of this specimen are : — 



Extreme length in middle line 10-4 app. 



„ „ from posterior ends of squamosals . . . . 11 -5 



Greatest width 10-3 app. 



Width between ends of ectopterygoid processes 7'2 



„ of palate 4'3 



Distance from interna] nares to tip of nose 5-7 



R. 3189. Imperfect skull, wanting the whole of the temporal arches and roof. Figured on 

 PI. XXV. fig. 1. 



Extreme length in middle line . 10 + 



Width of palate 4-2 



Distance from internal nares to tip of nose 5'8 



Presented by the Egyptian Government, 1904. 

 R. 3202. Posterior portion of two skulls, probably of young individuals of this species. The only 

 notable difference observable between these and the type skull is, that the quadrate 

 articulation is less markedly pedunculate. Presented hy W. E. de Winton, Esq., 1903. 

 C. 10039. Carapace and plastron, somewhat crushed and much coated with gypsum. This specimen 

 was described and figured in Ann. & Mag. Nat. Hist. [7] vol. xi. (1903) p. 119, pi. viii. 

 fig. 1 (reproduced in text-fig. 9G). The dimensions (in centimetres) of this specimen 

 are : — 



Carapace : 



Greatest length 47'5 



Length in middle line 45 



Greatest width (increased by crushing) 41 



Length of nuchal bone 7 app. 



Width of nuchal bone 6-5 app, 



Plastron : 



Greatest length 44 



Length in middle line 41'6 



„ of bridge 20-5 



,, of anterior lobe 11-5 



Width of anterior lobe 24 



Length of posterior lobe 15 app. 



Width of posterior lobe 24 



