PLESIOSATJRID^. 



201 



42032. An imperfect early middle cervical vertebra ; from Potton. 

 The dimensions of the centrum are: — length 0,042 (1*65 

 inches), height 0,055 (2-15 inches), width 0,070 (2-75 

 inches). The same dimensions in a cervical of G. trochan- 

 terius (jNo. 42496 a) corresponding approximately in 

 serial position with the present specimen being : — length 

 0,048 (1-88 inches), height 0,053 (2-1 inches), width 

 0,067 (1-64 inches). Purchased, 1870. 



31902. An imperfect cervical vertebra agreeing very closely with 

 the preceding specimen ; from the Kimeridge Clay of 

 Shotover, near Oxford. The dimensions of the centrum 

 are:— length 0,041 (1-6 inches), height 0,052 (2-05 inches), 

 width 0,070 (2-74 inches). Purchased, 1859. 



31907. A more imperfect and somewhat later cervical vertebra, 

 apparently associated with the preceding; from Shotover. 



Purchased, 1859. 



42032 a. A somewhat later cervical vertebra, in an imperfect and 

 much rolled condition: from Potton. Purchased, 1870. 



R. 257. An immature cervical centrum not improbably belonging 

 to the hinder part of the neck of the present form ; from 

 Shotover. The dimensions are : — length 0,041 (1-6 inches), 

 height 0,056 (2-2 inches), width 0,076 (3 inches). 



Eyerton Collection. Purchased, 1882. 



42099. A much smaller immature cervical centrum of similar type : 

 from Potton. Purchased. 1870. 



41905. A " pectoral " or lumbar vertebra ; from the Kimeridge Clay 

 of Kimeridge Bay, Dorsetshire. The dimensions of the 

 centrum are : — length 0,055 (2-16 inches), height 0-100 

 (3-94 inches), width 0,113 (4-45 inches). 



Presented bij J. C. Mansel-Plei/dell, Esq., 1870. 



31906. The centrum and part of the arch of a dorsal vertebra ; from 

 Shotover. The dimensions of the centrum are: — length 

 0,043 (1-7 inches), height 0,100 (S'94 inches), width 

 0,1 05 (4-14 inches). Purckasi d, 1 859. 



45869. A slab in three fragments containing six dorsal vertebrae, 

 (Fig.) portions of ribs, and some distal limb-bones-; from 

 Kimeridge liay. The types ; three of the vertebra- are 

 figured by Jlnlke in the ' Quart . Journ. Geol. 8oc.' vol. xxvi. 

 pi. xli. tigs. 7-9. The contour of the terminal faces of 

 these vertebrae agrees precisely with that of several of the 



