MOSASAUEID^!. 



269 



35627. A posterior trunk vertebra. The matrix resembles that of 

 No. 35635. 



40982. The centrum of a larger posterior trunk vertebra. 



Presented by Sir C. Lyell, Bart, 1868. 



Liodon, sp.— Anterior and left lateral aspect of an imperfect anterior caudal 

 vertebra ; from the Cretaceous of Alabama, f . 



The centrum of a large anterior caudal vertebra. The 



35625. 



{Fig.) 



chevron-facets are well shown, and the specimen agrees 

 closely with the anterior caudal of L. jproriger, figured by 

 Cope, op. cit. pi. xxx. fig. 11 . This specimen is represented 

 in the accompanying woodcut. 



35626. The centrum of a somewhat later caudal vertebra. 



35635. The centrum of a much smaller caudal vertebra. The matrix 



of this and the following specimen differs from that of the 

 jaws, and it may belong to a distinct species. 



35636. An imperfect centrum of similar type. 



40983. The centrum of an anterior caudal vertebra of similar t size 

 but of a larger type. The matrix agrees with that of the 

 jaws. Presented by Sir C. by ell, Bart., 1868. 



Genus PLATECARPUS, Cope l . 



Byn. Lestosaurus Marsh 2 . 

 Taniivhasauriis, Hector 



1 Proc. Bost. Nat Hist. Soc. vol. xii. p. 2l>4 (1869). 



2 Amer. Journ. ser. 3, vol. iii. p. 45-1 (187-). 



3 Trans. N. Zealand Inst. vol. vi. p. 353 (1874). 



