438 Wortman — Studies of Eocene Mammalia in the 



plays upon its outer surface a well-marked interosseous ridge. 

 The distal extremity has a large thickened internal malle : 

 olus, upon the internal and posterior surface of which is seen a 

 deep tendinal sulcus. The articular surface shows but little 

 grooving where it touches the astragalus. 



The shaft of the fibula exhibits but little reduction when 

 placed in comparison with the modern Canids. The head of 

 the bone is relatively large with considerable fore and aft pro- 

 jections, and the proximal part of the shaft is sharply divided 

 into three surfaces by as many distinct ridges ; of these latter 



Figures 1, 8, 9. — Right femur, tibia, fibula; 

 Wortman ; three-fourths natural size. (Ootype.) 



and humerus of V. Harcjeri 



the anterior and posterior soon disappear below, but the internal 

 is continued down the shaft as a sharp interosseous ridge. In 

 keeping with the unreduced character of the bone, the distal 

 end is large and prominent. The usual obliquely placed articu- 

 lar facet by which it touches the astragalus is present, but there 

 is no evidence of a calcaneal facet. Behind and to the outer 

 side is seen a prominent bony process which is deeply grooved 

 for the passage of flexor-tendons. 



