254 Dr. A. Smith Woodicard — A Tviassic Reptile from Brazil. 



The detached ungual phalange (Figs. 4, 4a, 4b) resembles the 

 corresponding bone of the digit just described in the concavitj" of its 

 lower face (Fig. 4a) and in its lack of bilateral symmetry ; but it is 

 relatively large and expanded. Its articular face (Fig. 4b) is oblique 

 and much deeper than broad ; its slightly convex side (Fig. 4) is 

 excessively large, owing to the expansion of the thin, rounded, distal 

 border ; while its flattened left side (Fig. 4a) is a comparatively small 

 triangular area. 



FiGi 3. — Digit with four phalanges (1-4), upper and lower (a) views, ex. excava- 

 tion of lower face of ungual phalange, f nat. size. 



The two ungual phalanges evidentlj- belong to one and the same 

 foot, which must have had obliquely-curved digits. If constructed as 

 in the Sauropodous Dinosaurs this foot would be of the left side, the 

 large claw belonging to digit i, while the series of four phalanges 

 would probably represent digit in. 



It is difficult to determine the affinities of a reptile known only by 

 remains as fragmentary as those now described. It is evident, 

 however, that the bones are those of a land - reptile ; and the 

 characters of the vertebrae suggest that they belong either to an 

 Anomodont or to a primitive Dinosaur. The fact that the dorsal 

 vertebral centrum shows no clear mark of an articular facette for the 

 rib seems to prevent its reference to an Anomodont ; while the shape 

 and characters of the cervical vertebra are so closely similar to those 

 of a corresponding vertebra from the Karoo Formation of South 



