224 SAUROPTERYGIA. 



by Meyer in the ' Palseontographica,' vol. vi. pi. iii. figs. 

 4-5. Length 0,047 (1-87 inches), height 0,059 (2-34 

 inches), width 0,067 (2-63 inches). 



Presented by M. Campiche, 1866. 



40164 b. Cast of the centrum of a smaller dorsal vertebra, probably 

 belonging either to this or the preceding species. The 

 original was obtained from the Lower Neocomian, and is 

 figured by Pictet and Campiche, op. cit. pi. vi. fig. 2. 



Presented by M. Campiche, 1866. 



40165. Cast of an imperfect rib. The original was obtained from 

 the Middle Neocomian, and is figured by Pictet and Cam- 

 piche, op. cit. pi. v. fig. 3. Presented by M. Campiche, 1866. 



Cimoliosaurus limnophilus (Koken x ). 



Syn. Plesiosaurus limnophilus, Koken 2 . 

 (?) Plesiosaurus degenhardti, Koken 3 . 



Apparently allied in vertebral characters to the following species, 

 but with the haemal carina in the- cervicals less strongly marked, 

 and no lateral depression on the centrum. Limbs unknown. 



This species was founded upon the evidence of a cervical vertebra 

 from the Wealden of Germany ; and there appears no sufficient 

 reason for separating the dorsals from the same deposits described 

 under the name of Plesiosaurus degenhardti. 



Hab. Europe (Germany and England). 



2446. The centrum of an anterior or middle cervical vertebra ; from 

 the Wealden of Cuckfield, Sussex. Length 0,035 (1-36 

 inches), height 0,032 (1-26 inches), width 0,037 (1*45 

 inches). Although of rather small dimensions this spe- 

 cimen agrees closely in proportions and character with the 

 type cervical figured by Koken in the ' Pal. Abhandl.' 

 vol. iii. art. 5, pi. ix. fig. 5. It presents a strong general 

 resemblance to the middle cervicals of O. porilandicus, 

 but has the haemal carina much less prominent. 



Mantell Collection. Purchased, 1838. 



36530. An imperfect middle cervical vertebra of rather larger size ; 

 from Cuckfield. The lateral borders of the terminal faces 

 have been worn away ; the anterior face is distinctly 

 cupped. Mantell Collection. Purchased, 1853. 



1 Pal. Abhandl. vol. iii. art. 5, p. 109 (1887). — Plesiosaurus, 



2 Loo. cit. 3 Ibid. p. 106. 



