SUPPLEMENT. 241 j 



has been somewhat water-worn, is figured by the writ^x 

 in the ' Quart. Journ. Geol. Soc.' vol. xlv. p. 243, fig. aur 

 where it is provisionally described as Ornithopsis. a p 

 differs in contour from the tooth of Hoplosaurus armatus : 

 but if referable to the present form must be one of the 

 smaller teeth, since it is inferior in dimensions to those 

 mentioned under the head of P. humerocristatus. 



Presented by H. Willett, Esq., 1888. 



Pelorosaurus humerocristatus (Hulke). 



Syn. Ornithopsis humerocristatus {supra, i. p. 151). 



The teeth from the Portlandian of Boulogne described by Sauvage 

 as Iguanodon precursor x and subsequently as Caulodon precursor 2 , 

 and by De la Moussaye as Neosodon 3 , probably indicate a form 

 closely allied to or identical with the present 4 . 



R. 1484. Cast of the proximal extremity of a right tibia which 

 may be referable to this form. The original was obtained 

 from the Kimeridge Clay at Ely, and is preserved in the 

 Woodwardian Museum at Cambridge. 



Made in the Museum, 1888. 



R. 1485. Cast of the centrum of a late caudal vertebra, probably 

 specifically identical with the preceding. History the 

 same as that of the latter. Made in the Museum, 1888. 



Pelorosaurus manseli (Hulke). 



Syn. Ornithopsis manseli (supra, i. p. 152). 



R. 1486. Cast of an imperfect sacral vertebra, which from its com- 

 paratively small size may be referable to this species. 

 The original, which was obtained from the Kimeridge 

 Clay of Stretham (Cambridgeshire), is preserved in the 

 Woodwardian Museum at Cambridge. It is mentioned by 

 Seeley in his ' Index to Eemains of Aves &c. in Cambridge 

 Mus.' pp. 94, 95, as one of the types of Gigantosaurus, 

 and provisionally referred to the cervical region. 



Made in the Museum, 18S8. 



1 Bull. Soc. Geol. France, ser. 3, vol. iv. p. 438 (1876). 



2 Ibid. vol. xvi. p. 626 (1888). 



3 Ibid. vol. xiii. p. 51 (1885). 



4 See Quart, Joum. Geol. Soc. vol. xlv. pp. 244, 245 (1889). 

 PAET IV. R 



