130 MARINE EEPTILES OF THE OXEOED CLAY. 



Scapula (test-fig. 67) : length in straight line from posterior 

 angle of ventral ramus to summit of 



dorsal ramus 26'4 



width of glenoid surface from above 



downwards ......... -i-S 



width of glenoid surface from before 



backwards 5'4 



Coracoids (text-fig. 67) : greatest antero-posterior length . . 39-2 

 width of united bones at posterior 



angle of glenoid cavity .... 38'5 



width of united bones at narrowest . 26-9 



„ between postero-extemal angles 36-8 



Greatest length of united coracoids and scapulas 60'0 



Humerus(Pl.V.figs.ll,lla, 116): length 31-5 



greatest width of upper end 10'6 

 width of shaft at narrowest 7'8 



„ distal eud . . . 19-4 

 Pelvis (PL V. figs. 8, 8 a, 8h,9,9a- test-fig. 65). 



Ilium: length 18-7 



greatest width of upper end 5'6 



width of shaft 3-2 



greatest width of lower end 6'2 



Pubis : greatest length 25-0 



width 27-8 



length of acetabular surface 8-0 



„ symph}'sial border 16-2 



Ischium : width of upper end 9-0 



„ neck 6'5 



„ lower expansion 20-2 



length of acetabular surface 3-8 



Femur (PI. Y. figs. 12, 12 a, 12 b) : length 28-4 



width of upper eud . . . B'O 

 „ middle shaft (at 



narrowest) . . 5-4 



„ lower end . . . 15'8 



Tibia (PI. Y. figs. 12, 12 «): length 7-1 



width 9-0 



Eibula(Pl.Y. figs. 12, 12 «,): length 6-5 



width 7-2 



R. 2B63 (Leeds Coll. 29). Imperfect skeleton, including fragments of skull and mandible ; forty- 

 two cervical vertebras (text-figs. 49-51), two pectorals (text-fig. 52), twenty-one dorsals 

 (text-figs. 52-55), and eight .sacrals (test-fig. 56) and caudals (text-fig. 57) ; numerous 

 ribs (cervical, dorsal (text-fig. 60), and caudal), ventral ribs (test-fig. 60); coracoids, 

 scapulae and iuterclavicle (PL V. fig. 10), humerus and some other bones of fore paddle ; 

 ilia, ischia, pubes ; femora and some other bones of hind paddle. 



In this specimen the neural arches \Yitli the neural spines are preserved united with 



