VERTEBRATES FROM PERMIAN OF TEXAS 



401 



The limb bones consist of the lower end of a humerus, two 

 bones of the fore limb and a fragment of the carpus (?) with 

 the distal end of a bone of the forearm (?) attached. Besides 

 these there are several phalanges, some in connected series. The 

 phalanges and metacarpals (?) are remarkably short and strong 

 and the terminal phalange 

 was covered with a very 

 stout claw bearing out the 

 suggestion made by Cope 

 that the animals were fos- 

 sorial in habit. Unfortu- 

 nately there are not more 

 than three phalanges uni- 

 ted in any one fragment, 

 and there are six terminal 

 phalanges altogether, so 

 that it is impossible to ^ ^ 



* Figs. 7. — Lower end of humerus of a diadec- 



state the exact number of ted reptile. Left side. 



phalanges in the digits, 



but it is probable that the usual reptilian formula was present. 



The phalanges are shown in Fig. 6. 



Figs. 8 and 9. — Limb bones of same specimen as Figs. 6 and 7. 



