98 



ANOMODONIIA. 



R. 533 j. One extremity of an epipodial bone. 

 E. 533 x. Fragmentary undetermined bones. 



Genus BRITHOPUS, Kutorga 1 . 



Syn. Orthopus, Kutorga 2 . 

 Eurosaurus, Fischer 3 . 



Definitely known by the humerus, which has both ectepicondylar 

 and entepicondylar foramina, of which the former merely pierces 

 the supinator ridge ; while its general contour resembles that of the 

 corresponding bone of Titanosuchus and Tapinocephulus. 



It has been shown by Owen that the type specimen of Orthopus 

 is the proximal extremity of a left humerus, probably belonging to 

 the same individual as the undermentioned specimen. As mentioned 

 below there is no evidence to show that Deuterosaurus is really 

 distinct from this genus. Eurosaurus seems to have been founded 

 upon the evidence of the same specimen as Orthopus, but was 

 subsequently confounded by Eichwald with, the Labyrinthodont 

 Melosaurus. 



Brithopus priscus, Kutorga 4 . 



Syn. Orthopus primcevus, Kutorga 5 . 

 Eurosaurus, Fischer G . 



The type and only known species. The humerus indicates a 

 reptile very much smaller than Titanosuchus ferox, although con- 

 siderably larger than Cynodraco serridens. Trautschold 7 describes 

 and figures part of a femur which he refers to this species. 



Hob. Russia. 



39358. Cast of the imperfect distal extremity of the left humerus. 

 The original, which is the type, was obtained from the 

 Upper Permian on the western flanks of the Urals in the 

 Government of Perm, province of Kazan, and is preserved 

 in the Museum of the University of Kazan. It is figured 

 by Kutorga in pi. i. of the work above cited; and is 

 noticed by Eichwald in his ' Lethsea Kossica,' vol. ii. p. 1626 

 (1860), as the coracoid of Eurosaurus. It is again figured 



1 Beitrage z. Kenntniss d. organischen Ueberreste d. Kupfersandsteins des 

 Urals, p. 9 (1888). 2 Ibid. p. 15. 



3 Bull. Soc. Moscou, vol. xv. p. 462 (1842). 

 * Op. cit. p. 9 (1838). ' Ibid. p. 15. 



Loc. cit. 7 Mem. Soc. Moscou, vol. xv. pt. i. p. 29, pi. 



a 



XI. 



