248 



SUPPLEMENT. 



R. 1534. Fragment of rock showing the ventral aspect of a later 

 caudal vertebra ; from the Bristol bone-bed. 



By exchange, 1888. 



Other specimens from the same deposit which cannot be satis- 

 factorily determined were obtained at the same time as the preceding. 



Genns MASSOSPONDYLUS \ Owen {emend. Lydekker 2 ). 



Imperfectly known. Centra of dorsal vertebra? much constricted 

 and inferiorly excavated, with oval terminal faces. The teeth 

 (figs. 56, 57) probably belonging to this genus have the posterior 

 border of the crown either sinuous or nearly straight. 



The genus was founded by Owen on the evidence of caudal 

 vertebrae, but since the description is insufficient and there is no 

 figure, it has been suggested that it may be permissible to regard 

 the original of the undermentioned vertebra as the type. 



Massospondylus carinatus, Owen 3 {emend. Lydekker 4 ). 

 The type species. Apparently about two thirds the size of 

 Megalosaurus dunJceri. Teeth unknown. 



Mg. 56. Fig. 57. 



lus (?) rawed. — Poste- 

 rior and external aspects of the 

 cro-wn of a tooth ; from the 

 Lameta beds near Nagpur. f. 



Massospondylus hislopi.— Posterior 

 and external aspects of the 

 crown of a tooth; from the 

 Maleri stage of the Indian 

 Gondwanas. f. (From the 

 ' Palaeontologia Indica.') 



The teeth referred to the Indian M. Mslopi, Lydekker 5 (fig. 56), 

 have comparatively thick crowns ; that form being probably of 

 approximately the same age as the present one. 



Hab. Africa. 



1 Cat. Foss. Eept. Mus. R. Coll. Surgeons, p. 97 (1854). 



2 Rec. Geol. Surv. Ind. toL xxi. p. 146 (1888). 



hoc. cit. 



Loc. cit. 



Op. cit. vol. xxiii. pt. i. (1890). 



