74 Annals of the South African Museum. 



The carpus of Eryops has been discussed by Cope, Emery, Broom, 

 and Case. In the specimen under description only two elements of 

 the carpus remain the "carpus" seen on the right limb being 

 merely lumps of matrix that have been painted black and photo- 

 graphed before their true nature was noticed. There were un- 

 doubtedly four elements in the proximal row. The element 

 remaining, the intermedium, articulated with the lower part of 

 the ulnar surface of the radius. It is a lozenge-shaped bone 

 20 mm. by 12 mm. in extent. Internal to it was the radiale. 

 Articulating with the intermedium, radius, and ulna was the 

 ulnare to follow Broom's interpretation of the Eryops carpus ; and 

 articulating with the external surface of the ulna was the pisiforme, 

 probably small. The other bone of the carpus remaining is imper- 

 fect, and is probably the 2nd carpale. 



The metacarpals are more slender than those of Eryops. Only 

 four metacarpals and four digits are preserved on each side, 

 and the phalangeal formula as preserved is 2, 2, 3, 3 (?) or 4. 

 The following table gives the chief measurements : 



Length Proximal width 

 in mm. in mm. 



1st metacarpal 23 15 



1st phalanx 15 14 



Claw 11 11 



2nd metacarpal 29 14 



1st phalanx 21 15 



Claw 12 11 



3rd metacarpal 28 17 



1st phalanx 19 14 



2nd phalanx 17 10 



Claw ? ? 



4th metacarpal 23 15 



1st phalanx 16 12 



2nd phalanx 12 9 



Pelvis. The pelvis is remarkable for the shape of the ilium. In 

 the possession of a backwardly directed superior process and the 

 absence of any superior anterior portion, the bone is more strongly 

 reminiscent of such reptiles as Varanosaurus and Opliiacodon than of 

 Ei-ijops or the Cotylosaurs. The posterior process of the ilium slopes 

 backwards and somewhat upwards, and has a rounded superior 

 margin. The anterior margin is slightly convex, and there is no 



