DICYNODONTID^J. 51 



belong to a Pariasaurian. The imperfect state of the 

 mpression of the humerus renders it, however, impos- 

 sible to draw any safe conclusions on this point, and the 

 serial position of the specimen must for the present remain 

 undecided. Presented by Sir H. Barhly, K.C.B., 1874. 



48075 a. A plaster cast taken from the preceding specimen to 

 show the bones in relief. The vertebral column and 

 pectoral limb are figured by Owen, I. c. figs. 1, 2 ; the 

 manus being represented from the palmar aspect. The 

 prepollex is omitted in the figure. Made in the Museum. 



d. The undermentioned specimen is probably referable 

 to the present family . 

 47095. Fragment of rock showing the impression of the frontal 

 surface of the temporal arcade, and a natural cast of the 

 inferior aspect of the anterior and middle regions of the 

 brain ; from the Karoo system of Styl-Krantz, in the 

 Sneewberg range. The cast of the brain shows a marked 

 general resemblance to that of a Permian Anomodont 

 from the United States, described and figured by Cope in 

 the < Proc. Amer. Phil. Soe.' vol. xxiii. pp. 234-238 

 (1886), and plate. Thus there is the same remarkable 

 narrowness in the region of the olfactory lobes and hemi- 

 spheres, and the prominences on the lateral borders of the 

 under surface of the mid-brain are precisely similar to 

 those shown in fig. 2 of Cope's plate, which are considered 

 to be the casts of vacuities in the cranial walls. In the 

 present specimen the olfactory lobes appear to be more 

 distinctly defined from the hemispheres than in the 

 American specimen. Presented by A. G. Bain, Esq., 1853. 



47095 a. A plaster cast taken from the preceding specimen. This 

 cast shows the hinder part of the temporal arcades in 

 relief, and the concavity of the lower part of the brain- 

 case. Made in the Museum, 1889. 



e. Of the following specimens of the pectoral and pelvic girdles and 

 limb-bones, it is probable that while the majority of the larger 

 ones are referable to Dicynodon, several of the smaller ones may 

 belong to Ptychosiagum. 



47104. Mass of rock showing the symphysis of the mandible, the 

 glenoidal region of the right pectoral girdle, and the right 



e2 



