MOSASATTEID^. 263 



R. 1224. The dentary portion of the right ramus of the mandible. 

 There are fifteen teeth. Presented by Dr. Peter Camper, 1784. 



42931. The anterior portion of the right ramus of the mandible of 

 a young individual, showing three fully protruded teeth, 

 and others in their alveoli. 



42938. Part of a small dentary bone with imperfect teeth, provi- 



sionally referred to a small individual of this species. 



42950-1. Undetermined bones of the skull. 



42997 a. The right splenial. No history, 



42939. A fragment of a jaw perhaps referable to this species. 



Of the following some may be referable to Liodon. 



42941. A number of crowns of small teeth, of which some may be 

 either the pterygoidal teeth of this form or may belong to 

 Liodon. 



42941. The crown of a very large tooth, probably from the hinder 

 part of the mandible. 



42929. Slab with six associated cervical vertebrae and an imperfect 

 bone of the skull. 



R. 1225. Slab containing a tooth, imperfect humerus, the centrum 

 of a vertebra, portions of ribs, and metapodial bones. 



No history. 



42933. Slab showing several trunk vertebrae, a small imperfect 

 quadrate, and the root of a tooth. 



42946. A slightly imperfect cervical vertebra. 



42946 a. A more imperfect cervical vertebra. 



42946 b. The imperfect centrum of a small cervical vertebra. 



42946 c. An imperfect cervical vertebra of still smaller size. 



42953. The imperfect neural arch of a cervical or dorsal vertebra. 



42946 d. An imperfect anterior dorsal vertebra. 



R. 1226. An imperfect posterior trunk vertebra. Figured by Owen 



(Fig.) in his ' Cretaceous Eeptilia ' (Mon. Pal. Soc), pt. i. pi. viii. 



figs. 4, 5. No history. 



42946 e. The imperfect centrum of a posterior trunk vertebra of a 

 very large individual. 



42946 f . The centrum of a posterior trunk vertebra. 



