202 SATTROPTERYGIA. 



dorsals of C. trochanterius ; the dimensions of one of the 

 centra are :— length 0,033 (1-3 inches), height 0,097 (3-8 

 inches), width 0,112 (4-4 inches). 



Presented by J. O. Mansel-Pleydell, Esq., 1874. 



Specimens ivhich may belong to either of the two preceding 

 species, or to C. truncatus (infra). 



R. 735. The imperfect left scapula of a very large individual ; from 

 the Kimeridge Clay of Kimeridge Bay. The extreme 

 length is 0,560 (22-1 inches). This specimen accords 

 closely with the imperfect scapulae from Shotover, figured 

 hy Phillips, op. cit. p. 377, diagram 177, as ischia, the 



Cimoliosaurus (cf.) trochanter his. — Ventral aspect of the pelvic girdle ; from 

 the Kimeridge Clay of Kimeridge Bay. About T V sc, scapula ; pc, ventral 

 (precoracoidal) plate of do.; /, scapulo-coracoidal-foramen ; gl, glenoid 

 cavity ; co, coracoid. (From the ' Proc. Geol. Soc.') 



view being taken from the ventral aspect. The present 

 specimen would indicate an individual of somewhat 

 larger size than the type of Plesiosaurus manseli. The 

 contour of this specimen is very similar to that of the 

 corresponding element of the next specimen, and is totally 

 different from that of Pliosaurus. 



Presented by J. C. Mansel-Pleydell, Esq., 1886. 



