igoi.] Matthew, Additional Observations on the Creodonta. 



15 



scapholunar, exactly as is found among Ursidas, instead of a flat 

 facet such as characterizes Canidse and Felidse. 



The unciform, cuneiform, Siwd pisiform are of the usual primitive 

 type, the former having a broad lunar facet separated by an angle 

 from that for the cuneiform. The trapezoid \v&.?, not been found, 

 but was evidently small, ovate, with a narrow facet for the magnum 

 and pinching out on the radial side so as barely to touch the 

 trapezium. The trapezium is large with triangular upper surface 

 and projects in a blunt point underneath the centrale and 

 trapezoid. 



There are five metacarpals, the first only two thirds as long as the 

 rest, but stout in proportion, and divergent though hardly oppos- 

 able. Its proximal facet allowed considerable play, and is 

 keeled toward its superior surface. The other metacarpals are 

 narrower, longer, and much closer together, with but little play on 

 the carpus. 



The phalanges are 

 keeled about as in the 

 bears, a little curved and 

 somewhat angulate in sec- 

 tion. ^\\Q ungual phalan- 

 ges are more specialized 

 than in any known Creo- 

 dont and the majority of 

 Carnivores. They are 

 large, high, and much 

 compressed, quite asmuch 

 so as in Ursidae but with 

 no trace of basal sheath. 



The Hifid Foot. 



The tarsus shows some 

 interesting characters. 

 The tibial and fibular ar- 

 ticulating surfaces are of 

 nearly equal width, and 



the fibula has a considerable facet on the calcaneum. The ectal 

 astragalo-calcanear facet is oblique as is usual among the earlier 



Fig. 7. Clcenodon ferox (Cope). Hind foot, three- 

 fourths natural size. Type specimen No. 3268. Tor- 

 rejon Beds, Wyoming. 



