DIIDECTID^:. 



103 



(1888). The specimen agrees with the corresponding por- 

 tion of the skull figured by Cope in the ' Proc. Araer. Phil. 

 Soc' vol. xix. pi. v. (reproduced in fig. 2L). 



Presented by B. LydeTcker, Esq., 1885. 



Fig. 22. 



Empcdias molar is. — Left lateral (a) and occipital (b) aspects of the cranium 

 from the reputed Permian of Texas. 5. (After Cope.) 



R. 572. A somewhat imperfect dorsal vertebra, which from its com- 

 paratively large size may be provisionally referred to this 

 species ; from Texas. The zygosphenes (hyposphenes) are 

 well shown, and the characters of the specimen agree 

 closely with those of the smaller type vertebrae described 

 by Cope in the 'Proc. Amer. Phil. Soc/ vol. xvii. p. 517. 

 Thus the zygapophyses are much elevated and laterally 

 expanded, and are connected together back and front. 

 From the junction the transverse process (diapophysis) 

 descends as a nearly vertical septum ; the inferior part of 

 this septum appears to have a distinct capitular facet, 

 which is thus placed on the side of the arch. The neural 

 spine is entire, and exhibits the stoutness and quadran- 

 gular cross-section characteristic of the types. The total 

 height of this specimen is 0,130. Purchased, 18S5. 



