222 SAUROPTEKYGIA. 



Cimoliosaurus chilensis (Gay 2 ). 



Syn. Plesiosaurus chilensis, Gay 2 . 



Of large size, but very imperfectly known. Possibly one of the 

 species described by Leidy or Cope may prove to belong to this 

 form. 



Hab. South America. 



38013. The centrum of a caudal vertebra ; from Mesozoic (? Cre- 

 taceous) beds at San Yicente, near Concepcion, Chili. 

 Noticed by Blake in the ' Geologist ' for 1862, p. 110. 

 Length 0,050 (1'95 inches), height 0,074 (2-94 inches), 

 width 0,100 (3*95 inches). The transverse processes are 

 anchylosed. This specimen approximates to the somewhat 

 larger caudal of O. (Diseosaurus) magnus, figured by Leidy 

 in his ' Cretaceous Eeptilia of the United States ' (Smiths. 

 Contrib. Knowl. 1864), pi. v. figs. 7-9. 



Presented by W. Bollaert, Esq., 1862. 



Cimoliosaurus latispinus (Owen 3 ). 



Syn. Plesiosaurus latispinus, Owen 4 . 



Imperfectly known. Apparently closely allied to the Kimeridgian 

 C. truncatus (infra, p. 230), with which it agrees in size and the 

 general structure of the cervical vertebrae. The lateral surfaces of 

 these vertebrae are, however, less depressed, and the terminal faces 

 more deeply cupped. 



The unnamed cervical vertebra from the Neocomian (Lower 

 Greensand) of Switzerland, figured by Meyer in the 'Palaeonto- 

 graphica/ vol. vi. pi. iii. figs. 1-3, belongs to this species. 



Hab. Europe (England and Switzerland). 



B. 1309. A broken slab containing a portion of the skeleton, from 

 (Fig.) the Lower Greensand of Maidstone, Kent. The type speci- 

 men. Comprises nine vertebrae, from the cervical, ci pec- 

 toral," and dorsal regions, ribs, an imperfect scapula, cora- 

 coid, ilium, and what is probably an ischium, together 

 with several phalangeals. A cervical, a pectoral, and a 

 dorsal vertebra, as well as a portion of the coracoid and 

 the ilium, are figured by Owen in his < Cretaceous Eeptilia ' 



1 Historia fisica y politica de Chile— Zool. vol. ii. p. 133 (1848). — Plesiosaurus. 



2 Log. cit. 



3 Oat. Foss. Kept. Mus. E. Coll. Surg. p. 63 (1854).— Plesiosaurus. he name 

 must, however, date from the description in 1864. 



4 Loc. cit. 



