DEPOSITS ELSEWHEKE THAN IN SOUTH AFRICA. 



359 



Ural, that we have an additional and weighty evidence of the palaeo- 

 zoic date of the " Karoo series " of South Africa. 



I next propose to offer evidence of a Theriodont reptile affined to 

 Lycosaurus, from a probably Permian deposit in North America. 



In a " red-sandstone formation " in Prince-Edward Island, a 

 portion of the skull of a reptile, including the left maxillary (21), 

 premaxillary (22), and nasal (15) bones (Cut, fig. 9), was discovered 



Tig. 8. 



Fig. 9. 

 Fig. 8. Lycosaurus, Ow. Fig. 9. Bathygnathus, Leidy. 



and has been described and figured by the eminent palaeontologist, 

 Joseph Leidy, M.D., in the ' Journal of the Academy of Natural 

 Sciences of Philadelphia ' *. 



The teeth, of which seven are preserved, are implanted in distinct 

 sockets, and have subcompressed, recurved, conical, acuminate crowns, 

 with anterior and posterior trenchant borders, of which the latter is 

 minutely crenulated f. Of these teeth the foremost in the maxillary 

 bone, protruding close to the maxillo -premaxillary suture, claims by 



* Vol. ii. p. 327, plate xxxii. t lb. ib. 



