188 



Annals of the Carnegie Museum. 



process, and that the lumbar vertebrae all have very long and broad 

 transverse processes. These facts together with the backward shifting 

 of the pelvis, and the small brain, indicate (i) the relatively large size 

 of the organs of the thorax and abdomen, and (2) the sluggish nature 

 of the animal. 



The shape and proportions of the i^elvis in Promerycochcerus do 



Fig. 28. Dorsal view of sacrum and pelvis of Promerycochaerus carrikeri. 

 No. 1081; -3- nat. size. 



not differ much from those of Merycoidodon, except in size. The ilium 

 in Promerycochcerus carrikeri has a slightly greater outward curve in its 



