276 PETRIFACTIONS AND THEIR TEACHINGS. CHAP. III. 



Vertebra marked -^^; l body with the bases of the neural arch; 

 figured in my " Fossils of Tilgate Forest," 

 PL IX. fig. 11. 



g*g s ; body of a dorsal vertebra. 



These are assigned to the crocodilian reptile to which the slender, flat, 

 acuminated teeth belong ; under the name of fiuchosaurus cultridens. 



A Caudal Vertebra split vertically, the body having a central cavity 

 which is filled with white calcareous spar, -ggfa, ^^. Referred to the 

 Poikilopleuron ; a crocodilian reptile found at Caen. Neural arch of 

 an anterior dorsal vertebra grrr : n g ure d in " Fossils of Tilgate Forest," 

 PI. XII. fig. 1, is also provisionally referred to the same genus. 



Two convexo-concave cervical vertebrae ^y^-; referred to Strepto 

 spondylus major in " Brit. Assoc. Rep.," and now labelled 8. recentior, 

 in all probability belong to the Iguanodon. 



.Posterior caudal vertebrae 2112, 2142, 2153 : referred to Cetiosaurus 

 brevis. 



Large posterior dorsal -gf^. 



eight inches in diameter ^J^. ; these are also 



referred to Cetiosaurus brevis. 



Four perfect anterior caudal s. These are also assigned to Cetiosaurus 

 brevis; described provisionally by Dr. Melville as C. Conybeari, and 

 since referred by me to the genus Pelorosaurus, to be described 

 hereafter. 



Two elongated subangular bodies of posterior caudals, figured in 

 "Fossils of Tilgate Forest," PL IX. fig. 8, and PL X. fig. 1 ; assigned to 

 Cetiosaurus brevis : referred to Iguanodon by Dr. Melville. The last 

 reference, which appears to me the most probable, must, however, be 

 regarded as only conditional. 



Dorsal vertebra ^^ ; assigned to Cetiosaurus brachyurus. 



Caudal vertebra ^VrJ to the same, referred by Dr. Melville to 

 Iguanodon 



Dorsal vertebra -^-^ and -/ggg ; referred to Iguanodon. 



Caudal vertebra "^-^ > referred to the Iguanodon. 



Sacral vertebra 2 WrJ to tne same. 



All the specimens above enumerated are described in 

 " Reports on Brit. Foss.," with that minuteness of detail and 

 consummate skill, which characterise the anatomical investi- 

 gations of the Hunterian Professor. 



The following extract from Professor Melville's commentary on the 

 above generic and specific determinations will put the scientific inquirer 

 in possession of the opinions of that eminent anatomist on the ques- 

 tionable references : " I can perceive no difference between the posterior 

 dorsal or lumbar vertebrae (No. 2,133, 2,115) assigned by Professor Owen 



1 The numbers refer to those affixed to the specimens in the " Cata- 

 logue of the Mantellian Collection in the British Museum." 



