228 



PROCEEDINGS OF THE XATIONAL MUSEl'M. 



VOL. XXX. 



The calcaneum has a considerably longer tuber than in Ilyaenodon^ 

 somewhat grooved on the superior surface of its distal end for the 

 tendon of the plantari.s. as in man}- modern carnivora. In Hy^nodon 

 the groove is absent. The cuboid is longer than in Ilya^nodoti and 



has a considerable astraga- 

 lar facet, which does not 

 extend, however, to the 

 dorsal surface. In Hyseno- 

 don this facet is .smaller 

 and farther removed from 

 the dorsal surface of the 

 bone. It seems to have 

 been absent or indistinct 

 in the specimens examined 

 by Professor Scott. In 

 the Oxya?nidie and Me- 

 sonj^chida? it is much bet- 

 ter developed. In modern 

 carnivora it is absent, but 

 it is moderately developed 

 i n Dap] I <vn ?/.s', a 1 1 h o u g h 

 lateral instead of partly 

 superior, as in Creodonta. 

 The cuneiform bones are 

 much as in Hyxnodon^ ex- 

 cept that the entocunei- 

 form is shorter and 

 broader, its contact with 

 Mt. II less, and the distal 

 facet broader and more 

 ol)lique. It is less elon- 

 gate and very much 

 broader than in modern 

 C'arnivora, and the distal 

 facet retains much more 

 of the primitive .saddle- 

 shaped curvature, thus 

 permitting a greater de- 



FlG. 20.— SINOI'A <;RAS(iERI, HIND FOOT, NAT. SIZE, DORSAL grCC. of OppOsltlOU of thC 

 VIKW. «*7. ASTRACiAl.fS: (■«/, CALCANEUM; <*, CUBOID: <"i,j,3, f! . f J • • i. 

 (UXEIFORM bones; 7iai', NAVICULAR. \\V^V Cllglt. 



The metatarsals are 

 somewhat less compressed and more slender than in Hy-c^nodon; their 

 relative propoi-tions are noted above. The head of Mt. I is broader. 

 In other respects there is very little difference. The phalanges 

 resemble those of the forefoot, except in their larger size and some- 



