356 Annals of the South African Mtisenm. 



backwards than the better-known genus. The small trochanter is 

 very prominent, and passes backwards and upwards from the neck 

 of the bone. Between the two trochanters and the head there is 

 formed a deep depression. The front of the bone is fairly similar to 

 that in Pareiasauriis, but below the great trochanter the constriction 

 is much more marked, being only 60 mm. The lower end of the 

 bone is much narrower than in Pareiasauras, measuring only 

 137 mm. across. 



Tibia and Fibula. 

 Both tibiae are preserved complete and portions of the fibulie. 

 The bones resemble so closely those of Pareiasaurus that no lengthy 

 description is necessary. The tibia measures 200 mm. in length. 

 The upper end is 110 mm. by 85 mm. The lower end measures 

 90 mm. by 60 mm. The shaft at its narrowest part measures 

 52 mm. by 35 mm. On the outer side of the right tibia, near the 

 middle of the shaft, is a prominent bone tubercle about as large as a 

 horse bean. Posteriorly the bone is considerably excavated in its 

 lower 3rd. The lower surface slopes a little more downwards and 

 inwards than in Pareiasaurus. 



Pes. 



The greater part of both hind feet were in position where found, 

 but unfortunately in removal the digits have to some extent got 

 mixed owing to the very friable nature of the matrix having resulted 

 in the contacts becoming lost. 



Both large proximal tarsal bones are beautifully preserved. They 

 very closely resemble those of Pareiasaurus, though there are minor 

 differences of contour. A large round foramen passes through the 

 middle of each bone, and on the back a very deep groove extends 

 down from the foramen. The greatest width of the bone is 114 mm., 

 and the greatest length 87 mm. It probably represents the tibiale, 

 fibulare, and intermedium fused together. 



The distal tarsal elements are probably small and cartilaginous 

 for the most part. There are, however, 2 bones which appear to 

 be tarsals. One of these is probably the 1st tarsal. It measures 

 36 mm. by 20 mm., and is attached to the element which is believed 

 to be the 1st metatarsal. 



Though the bones of the digits are in one or two cases slightly 

 displaced it is possible to reconstruct the pes with some degree of 

 certainty. In the left foot 3 digits are preserved in position, and 2 

 of these are fairly complete, and the bones of the other 2 toes are 



