68 



THE SKELETON OF THE CAT. 



side a wedge-shaped process, the sty loid process (/), extends 

 distad. The distal surface of the end together with the lateral 

 surface of the styloid process form a concave articular cavity 

 (g] which fits against the scapholunar bone. 



FIG. 49. RADIUS AND ULNA, DORSO- FIG. 50. RADIUS AND ULNA, VENTRO- 



LATERAL VlEW. MEDIAL VlEW. 



7, radius; //. ulna, 0, "head of radius; l>, neck; c, bicipital tuberosity; d, 

 articular circumference ; e, facet for radial fossa of humerus ; f. styloid process of 

 radius; ", facet for articulation of scapholunar bone; A, semilunar (or great sigmoid) 

 notch of ulna; z, coronoid process; j, olecranon; /'. area for insertion of brachialis 

 and clavobrachial muscles; /, rough area for attachment of interosseous membrane; 

 ffi, styloid process of ulna. 



The dorsal surface of the distal end is marked by longi- 

 tudinal grooves for tendons, and its lateral or ulnar surface bears 

 a concave facet for articulation with the ulna. 



Ulna (77, Figs. 49 and 50). The ulna is a long slender 



