RHACHITOMOUS VERTEBRAE 



591 



which has a broad anterior projection, and only a slight posterior 

 one (Fig. i, A) suggesting affinities with the African Therapsida. 



Fig. i.—Casea hroilii Will. A, right innominate, from without; B, right femur, 

 dorsal; C, right femur, inner side; D, the same, distal end; E, the same, proximal end; 

 F, right tibia, ventral; G, the same, dorsal; H, the same, proximal; I, the same, distal; 

 J, right fibula, dorsal; K, the same, inner; L, the same, proximal; M, the same, distal; 

 N, right foot, dorsal. All figures one-half natural size. 



The pubes and ischia also differ markedly from both the clep- 

 sydropid and poliosaurid types in the absence of the platelike 



