330 



ON THE EXTINCT MAMMALIA OF 



number of teeth holding the same relation. The breadth at the narrowest portion of 

 the smaller specimen is scarcely ten lines ; that of tlie other is nearly fifteen lines. 



13. The lower extremity of a radius, the articular surface of which measures 

 twenty-one lines in breadth. 



14. Four astragali, of which the largest and smallest present the following 

 measurements : 



Width of inner condyle. 

 Width of outer condyle. 

 Breadth of base, 

 Breadth of scaphoid surface, 

 Depth of scaphoid surface, . 



15. Four distal ends of metacarpals and metatarsals, the articular surfaces of which 

 measure the following breadths : fifteen, twelve, eleven, and ten lines. 



16. Five first phalanges or pasterns, of which three present the following measure- 

 ments, the others being of intermediate proportions : 



Length in the axis. 

 Breadth of proximal end. 

 Breadth of distal articulation, 

 Breadth at middle of shaft, 



Length in the axis. 

 Breadth proximally, . 

 Breadth distally. 



