138 MAEKE EEPTILES OF THE OXFORD CLAT. 



_. , Anterior Middle Posterior Middle Anterior Posterior 



VerteDise cerTical. cerrical. cer-rical. dorsal. caudal. caudals. 



(Figured.) (Figured.) 

 Length of centrum in mid- 

 ventral line 4-5 6-5 5-9 6-S 5-0 3-5 2-9 



"Width of posterior face of 



centrum 5-2(app.) 7-7 8-7 S--i 7-0 4-0(app.) 3-6 



Height of ditto 6-0 6-7 7-6 5-9 5-2 2-3 



Humerus : greatest length 36'7 



longest diameter of head ll'O 



greatest width of upper end 14'3 



antero-posterior diameter of shaft at narrowest . 9-7 



width of distal end 23-7 



Ilium : greatest length 21*3 



width of upper end 



7-3 



„ middle of shaft (approx.) 4-0 



„ lower end . . 7-8 



Femur : greatest length 34-9 



long diameter of head (approx.) 9-8 



greatest width of upper end (approx.) 12'2 



width of shaft at narrowest 7-3 



width of distal end 19*6 



E. 2456. Portions of a skeleton of a fully adult individual probably of this species. The cervical 

 vertebrae are greatly crushed and distorted, so that their characters cannot be made out 

 with certainty. The parts preserved are : — ten cervical vertebrae, eleven dorsals and 

 fourteen caudals, mostly wanting the neural arches and much crushed and distorted ; 

 portions of the coracoids and scapulae, an imperfect interclavicle with traces of the 

 thin adherent clavicle on one side, humeri, radii, ulnae, and other bones of the fore 

 paddle ; ilium, left femur, tibia and fibula, and other bones of the hind paddle. 



In this specimen ossification is very far advanced : the coracoids and scapulae meet in 

 a continuous median symphysis, and the humerus and femur are notable for the great 

 development of the rugosities for the insertion of muscles on the ventral face of their 

 shafts. 



The dmiensions (in centimetres) of this specimen are : — 



Humerus : length 33-6 



greatest width of upper end (crushed) ll'O 



width of shaft at narrowest 8-4 



width of distal end 19-7 



Eadius : greatest length (anterior border) 9-0 



width at proximal articular surface 9'5 



"Ulna : greatest length 7'1 



width at proximal articular surface 8-0 



Ilium : length 22-5 



J, lower end (crushed) 6-4 



