THE FORE FOOT OF DIMETRODON 315 



drawing of Broom's restoration, slightly modified according to 

 Osborn; i. e., the bone marked centrale 2 was called by Broom radiale. 

 It will be seen that the carpus is essentially the same if the radiale is 

 restored. The fifth carpal is missing, but that may well be left open 

 for future evidence, as there is so commonly a fifth carpal in the 

 primitive reptiles. 



E. C. Case. 



State Normal School, 

 Milwaukee, Wis. 



