CETI0SAUR1D.E. 137 



Cetiosaurus oxoniensis, Phillips l . 



Syn. (?) Cetiosaurus medius, Owen 2 . 



Cetiosaurus longus, Owen 3 (in parte). 



The type species 4 . The dorsal vertebrae considerably smaller than 

 those of Ornithosis hullcei. Centra of posterior caudal vertebra) 

 comparatively short ; chevrons sometimes closed. Length of femur 

 1,850 (64 inches). 



Hab. Europe (England). 



R. 979. The imperfect centrum and base of the arch of a trunk 

 vertebra provisionally referred to a small individual of this 

 species ; found at Bibury, near Cirencester, Gloucester- 

 shire, and probably from the Great Oolite (Lower Jurassic). 

 There are deep lateral pits in the centrum, which appears 

 to be otherwise solid. The transverse diameter of the 

 posterior face of the centrum is 0,120, and the length 

 0,065. Although smaller it resembles the specimen figured 

 " in Phillips's < Geology of Oxford,' p. 254, fig. 86. 



Presented by Hon. and Rev. F. Button, 1887. 



16091. The imperfect centrum of one of the most anterior caudal 

 vertebras ; from the Great Oolite of Blisworth, North- 

 amptonshire. This specimen closely resembles the ex- 

 ample figured by Phillips in his 'Geology of Oxford,' 

 p. 262, figs. 92, 93. Together with the following speci- 

 men, it was originally in the collection of Miss Baker of 

 Nottingham, and is probably one of the specimens men- 

 tioned by Owen in the ' Eep. Brit. Assoc' for 1841, p. 101, 

 as C. medius. Purchased. About 1843. 



16090. The imperfect centrum and part of the arch of a somewhat 

 later caudal vertebra ; from Blisworth. Same history. 



12425. Cast of the centrum of an anterior caudal vertebra. The 

 original was obtained from the Great Oolite of Bucking- 

 hamshire, but is now lost ; the cast is described in 

 Phillips's < Geology of Oxford,' pp. 246, 265 ; the length of 

 the centrum is 0,154 (6 inches). 



Mantell Collection. Purchased, 1838. 



1 Geology of Oxford, p. 291 (1871). 



2 Eep. Brit. Assoc, for 1841, p. 100 (1842). Not figured. 



3 Mesozoic Reptilia (Mon. Pal. Soc), pt. ii. p. 27 (1875). 



4 See Hulke, Quart. Journ. Geol. Soc. vol. xxviii. p. ol ; and Owen. Mesozoic 

 Reptilia, pt. ii. p. 20, note 4. 



