Limb-hones 0/ Massospondylus (?) Browni. 121 



Both anterior and posterior zygapophyses are broken away, 

 as is the upper part of the neural spine. This is the first 

 example in which the neural arch of a dorsal vertebra has 

 been found preserved in a South-African Saurischian. 



The upward direction of its transverse processes recalls the 

 condition in Belodon and Staganolepisj but is more marked 

 tlian in either. It makes no approximation apparently to the 

 American Ceratosawus, in which Professor Marsh's figure 

 does not indicate any transverse process at all in the dorsal 

 region. It differs from Megalosaurus not only in the 

 ascending transverse process, but in the relatively lower 

 situation of the articulation for the head of the rib. 



Caudal Vertehrce *. 



The only caudal vertebrae collected are three small speci- 

 mens from towards the extremity of the tail, which are some- 

 what elongated and slightly decrease in length. The earliest 

 of the three is about an inch long, somewhat distorted by 

 pressure, with the articular face in front less than half an inch 

 in diameter. The underside of the centrum is marked with 

 two parallel ridges, separated by a groove, and the anterior 

 face is flattened, with a slight oblique area at the basal 

 margin, which may indicate a chevron attachment. The 

 sides are concave in length, convex from above downward. 

 The neural spine is not preserved, and the neural arch is 

 narrow and appears to extend along the centrum. The 

 zygapophyses are not preserved. 



The other two vertebrte are rather shorter ; they show 

 indications of slight transverse tubercles. The articular faces 

 are concave ; the sides are convex vertically, as is the base 

 transversely. The association of these specimens rests upon 

 their being collected together. When the articular faces of 

 the three vertebree are put together they form a curve which 

 is concave on the underside^ as though the tail hung down- 

 ward. 



Bones of the Foot. 



The proximal ends of five small metatarsal bones are the 

 only part of those bones collected. When placed together in 

 contact they have a transverse width of less tlian o inches. 

 The innermost has a vertically ovate articular surface, an 

 inch deep and half an inch wide. It was probably oblique in 



* There are no characters which would indicate the association of these 

 vertebnB with the cervical and dorsal, as parts of the same animal ; and 

 I only notice them as collected at the same time. 



