SUPPLEMENT. 



233 



frontal and nearly straight inner border characteristic of 

 the type. 



R. 1529. The imperfect skeleton of a smaller individual apparently 

 referable to this species. The prefrontals have a convex 

 inner border. In this specimen the sutures are very 

 indistinct and thereby suggest maturity ; but since the 

 same feature occurs in all the smaller skulls of this type 

 in the collection of Mr. Leeds, it would seem that this 

 is not the case. 



Specifically Undetermined Specimens. 



24805. The centrum of a cervical vertebra ; from the Kimeridge 

 Clay of Devizes, Wiltshire. Closely resembles the cervicals 

 of M. superciliosum, No. R. 1529. 



Cunnington Collection. Purchased, 1849. 



42094. Two imperfect cervical vertebrae ; from the Neocomian 

 hone-bed of Potton, Bedfordshire. These specimens, 

 which were probably derived from the Kimeridge Clay, 

 have longer centra, with a more prominent haemal carina, 

 than the preceding specimen. Purchased, 1870. 



42096. An imperfect cervical vertebra of similar type ; from Potton. 



Purchased, 1870. 



46805. The centrum of a dorsal vertebra : from Devizes. 



Cunnington Collection. Purchased, 1875. 



46805 a. The crushed centrum of a dorsal vertebra ; from Devizes. 



Cunnington Collection. 



46805 b. The centrum of a lumbar vertebra ; from Devizes. 



Cunnington Collection. 



46805 c. The centrum and base of the arch of a caudal vertebra; 

 from Devizes. Cunnington Collection. 



44179. Three imperfect centra of dorsal vertebrae ; from the Kime- 

 ridge Clay of Weymouth, Dorsetshire. These specimens 

 are the only recorded instance of the occurrence of Metrio- 

 rhynchus at this locality. Purchased, 1873. 



47990. The three teeth entered in Pt. 1. p. 94 under the head of 

 Dacosaurus are referable to Metriorlujnchus. 



