274 SQTJAMATA. 



36557. The crowns of two small teeth, of which one is very short 

 and thick ; from Sussex. 



Mantell Collection. Purchased, 1853. 



43194. The crown of a very small tooth ; from Gravesend. Figured 

 (Fig.) by Mantell, op. cit. fig. 230. 



Wetherell Collection. Purchased, 1871. 



R. 1233. A small imperfect caudal vertebra ; locality unknown. 



No history. 



5642. A small imperfect trunk vertebra; from Sussex. Figured 

 (Fig.) by Mantell in his ' Geology of the South-east of England/ 

 p. 146, fig. 2, and in the ' Geology of the South Downs/ 

 pi. xxxiii. fig. 13 ; and also by Owen in his ' Cretaceous 

 Eeptilia ' (Mon. Pal. Soc), pt. i. pi. viii. figs. 1-2, as Mosa- 

 saurus gracilis. Mantell Collection. Purchased, 1838. 



5641. Two associated caudal vertebra?, agreeing in size with the 

 (Fig.) preceding; from Sussex. Eigured by Mantell, op. cit. 



p. 146, fig. 1, and pi. xli. fig. 3 ; and also by Owen, op. cit. 



pi. viii. fig. 3, as M. gracilis. Same history. 



37000 a. A series of imperfect caudal vertebra? ; from Norwich. 

 In all the chevrons are anchylosed to the centra. 



Purchased, 1860. 



37000 b. The united atlas and axis vertebra?, apparently associated 

 with the preceding ; from Norwich. Same history. 



48942. An imperfect posterior caudal vertebra ; from Norwich. 

 This specimen, in which the chevron is anchylosed to the 

 centrum, is said to have been found in association with 

 the tooth No. 48943, referred to Liodon anceps. 



Purchased, 1878. 



C. From the Cretaceous of Alabama. 



35632. Tho centrum and left transverse process of a dorsal vertebra. 

 In tho cylindrical centrum this specimen resembles the 

 vertebra? of Mosasaurus camperi, and differs from those of 

 Liodon perlatus. Presented by Prof. J. W. Malet, 1859. 



Suborder DOLICHOSAURIA. 



Body anguiform. Vertebra? with zygosphenes, and more than 

 nine in cervical region. Limbs imperfectly known, but apparently 

 of a Lacertilian type. Sacrum and pectoral and pelvic girdles well 

 developed. 



