TAPHSTOCEPHALID^E. 85 



pi. xxv., without generic determination, and noticed by 

 Owen in his ' Catalogue/ p. 13, no. 29, as Pariasaurus. 

 The distal extremity is described by Seeley as indicating 

 Mammalian affinities. The femur, No. 43525 t {infra, 

 p. 89), may belong to the same individual as the present 

 specimen. 



Presented by W. G. Atherstone, Esq., M.D., 1872. 



R. 1706 a. An imperfect anterior dorsal vertebra ; from the same 

 locality as the type, and perhaps therefore referable to the 

 same individual. This specimen has been longitudinally 

 bisected in a vertical plane to show the notochordal canal. 

 Noticed by Owen in his ' Catalogue,' p. 3, no. 4, and re- 

 ferred to Tapinocephalus. The rib-facet is partly on the 

 arch and partly on the centrum ; and the specimen closely 

 approximates to the under-mentioned dorsal No. 43525 d, 

 although of somewhat smaller dimensions. If the series 

 to which the latter belongs is referable to the present 

 genus, this specimen will likewise be referable to the 

 same, although perhaps specifically distinct. 



Presented by W. G. Atherstone, Esq., M.D., 1872. 



The following associated series of vertebra, of which the majority were 

 referred by Owen to this species, appear generically inseparable, ■ 

 but may indicate a distinct species. 



43525 a. The centrum and base of the arch of a cervical vertebra, 

 (Fig.) probably belonging to the same individual as the under- 

 mentioned dorsals, and accordingly provisionally referred 

 to the same form ; from the Karoo system, apparently of 

 Gats-Plaatz, Spreuw Fontein, Prince Albert district. 

 Figured by Owen in his 'Catalogue of the Fossil Reptilia 

 of S. Africa,' pi. x., and also in the ' Quart. Journ. Geol. 

 Soc' vol. xxxii. pi. v., as Pariasaurus bombidens. This 

 specimen is there stated to have been obtained from Vers 

 Fontein. but its mineralogical condition is precisely similar 

 to that of the undermentioned dorsals. The centrum has 

 been longitudinally bisected in a horizontal plane. Large 

 facets for intercentra are shown. 



Presented by W. G. Atherstone, Esq., M.D., 1872. 



It. 854. An imperfect and somewhat crushed later cervical vertebra, 

 agreeing in general character with the preceding ; from 

 the Karoo system of the Gouph district, near .Beaufort 



