PLESIOSATJKIDiE. 137 



it. 1247 a. A similar specimen, apparently associated with the 

 preceding. JS J o history. 



31923. An imperfect centrum closely resembling No. 46795 d ; from 

 the Kimeridge Clay of Shotover, Oxfordshire. Purchased. 



40406. The centrum of a dorsal vertebra resembling No. R. 1246, 

 but of rather smaller size ; from the Kimeridge Clay of II- 

 minster, Somersetshire. 



Presented by Sir R. Owen, K.C.B. 



46796 b. A very similar specimen ; from Devizes. 



Cunnington Collection. 



24684 d. A similar centrum ; from Wootton-Bassett. 



Cunnington Collection. Purchased, 1849. 



24684 e. The imperfect centrum of a dorsal vertebra apparently 

 resembling No. 46795 d; from Wootton-Bassett. 



Cunnington Collection. 



46796 C. The centrum of a dorsal vertebra of similar type ; from 

 Devizes. This imperfect specimen has been vertically 

 and longitudinally bisected. 



Cunnington Collection. PurcJiased, 1875. 



47988. The centrum of a smaller dorsal vertebra, perhaps belonging 

 to this form ; from Shotover. 



Presented by the Hon. R. Marsham, 1877. 



46796 d. The centrum and base of one side of the neural arch of 

 what is either a " pectoral " or a lumbar vertebra ; from 

 Devizes. Probably associated with No. 46796 c. 



Cunnington Collection . 



R. 926. Cast of a right humerus probably referable to this species. 

 The original was obtained from the Kimeridge Clay of 

 Ely, and is in the collection of Mr. Marshall Fisher of 

 that town. A small portion of the postaxial border of 

 the distal extremity is broken away. The extreme length 

 is 0,724 (28*4 inches), and the distal diameter about 0,330 

 (13 inches). The dimensions and contour of this bone 

 accord very closely with those of the humerus figured by 

 Phillips on p. 363 as P. brachydirus, but which is much 

 larger than the femur of that form, and is in all proba- 

 bility referable to the present species. 



Presented by R. Stead Jones, Esq., 1863. 



