232 SAUROPTEEYGIA. 



centrum, and is connected with the arch by a vertical 

 ridge. There is a very similar but rather smaller specimen 

 from Shotover in the Oxford Museum. This specimen 

 approaches closely to the cervicals of Polyptychodon. 



Purchased, 1846. 



41956. The centrum of a rather smaller and somewhat later cervical 

 vertebra ; from the Kimeridge Clay of Weymouth. On 

 one side the costal facet is almost confluent with the neural 

 facet, while on the other there is a considerable interval 

 between the two. Purchased, 1870. 



47169 x. The crushed centrum of a large posterior cervical vertebra, 

 closely resembling the precediug specimen, but belonging 

 to an adult animal ; said to be from the Cornbrash of 

 Stilton, Northamptonshire, but more probably from the 

 Kimeridge Clay. Length 0,056 (2-22 inches), height 

 0,065 (2-55 inches), width 0,080 (3-15 inches). 



Sharp Collection. Purchased, 1876. 



R. 1400. The centrum of a large posterior cervical vertebra ; pro- 

 bably a specimen derived from the Kimeridge Clay, locality 

 unknown. This specimen has evidently been subjected to 

 rolling. No history. 



41776 a. The centrum of a rather smaller and later cervical vertebra 

 of an immature individual ; from the Kimeridge Clay of 

 Ely. Purchased, 1869. 



47422. The centrum of a posterior cervical vertebra ; from the 

 Kimeridge Clay of Ely. This specimen, in which the 

 arches were anchylosed, closely resembles No. 41956. It 

 exhibits a distinct forward overhang of the upper part of 

 the centrum ; and the costal articulations are connected 

 by a ridge with the arches. 



Sharp Collection. Purchased, 1876. 



47421. Three imperfect anterior dorsal vertebras associated with 

 the preceding. The centra have transversely elliptical 

 faces, with the haemal surface flattened, and without 

 foramina, and the sides constricted. Length of centrum 

 0,063 (2-50 inches), height 0,068 (2-68 inches), width 

 0,081 (3-2 inches). The arches are imperfect. 



Sharp Collection. 



42288. An imperfect later dorsal vertebra ; from the Kimeridge Clay 

 of the Isle of Portland, Dorsetshire. The general contour 



