76 Annals of the South African Museum. 



pointed, as in the fore-foot. The following are the chief measure- 

 ments of the bones of the digits in millimetres :- 



Length Proximal width 

 in mm. in mm. 



1st metatarsal 24-5 18 



1st phalanx 15 



Claw approx. 10 



2nd metatarsal 36 



1st phalanx 26 19-5 



Claw approx. 11 



3rd metatarsal 



1st phalanx 24-5 20 



2nd phalanx 17 



Claw 11 n 



4th metatarsal 37 



1st phalanx 24 



2nd phalanx 15 15 



3rd phalanx 12 10 



Claw missing 



5th metatarsal 23 16 



1st phalanx 21 15 



2nd phalanx 16 12 



Claw 11 



Armour. The whole of the under side of the body was covered 

 with an armour consisting of elongated, overlapping scales arranged 

 in diagonal rows. The length of each scale in the mid-ventral 

 region is about four times the width. Each scale, viewed from 

 above, has a median groove, with one or two interrupted and nar- 

 rower lateral grooves. Broom, in his description of a specimen 

 from Senekal, says : " The armour consists of elongated, imbricated 

 scales. One set of scales, probably from near the middle line, 

 are much flattened and almost identical in appearance from those 

 of the middle region of the abdomen of Eryops. The other series 

 are probably from the more lateral region, and are narrower and 

 less flattened." 



RHINESUCHUS AFIUCAXUS (Lydekker). 

 1890. En/ops africanus, Lydekker. Quart. Journ. Geol. Soc., xlvi., 



p. 291; pi. xii., tig. 2. 



This species was described by Lydekker from a somewhat incom- 

 plete mandibular ramus obtained from some unknown locality in 

 the Karroo, and was placed in the genus Eliincsuclius by Broom. 



