228 PROCEEDINGS OF THE ACADEMY OF [1889. 



shape, having a very oblique facet for the navicular; the tibial side 

 of the bone is much higher than the fibular and consequently the 

 proximal edge slopes strongly downward and outward. 



The entocuneiform is high and narrow, though of considerable 

 depth ; the proximal end rises sharply toward 

 the plantar side, so that this diameter much 

 x j exceeds that on the dorsal side. The facet 

 3^'S^vA / )) f° r Mt. I is narrow and concave from before 

 backwards. The entocuneiform descends con- 

 siderably below the level of the mesocuneiform 

 v , „..,.,.. and abuts against the side of the second meta- 



Fig 6. Dinictis felziia ; ~ 



proximal endsof metatarsals, tai'Sal. 

 facets for the tarsals repre- 

 sented by c,' c," c,'" cb. A^ compared with those of most of the ex- 

 isting Felidce, the metatarsals of Dinictis are weak and slender and 

 have a viverrine appearance. Only the proximal end of Mt. I is 

 preserved and so its length cannot be determined, but the diameter 

 of the shaft is relatively less reduced than in Cryptoprocta, and ap- 

 parently the hallux bore about the same proportion to the other 

 digits as in Paradoxurus. The head is convex from before back- 

 wards, concave from side to side, extending upwards and inwards, 

 with a prominent rugose surface on the tibial side. Metatarsal II is 

 rather short and quite slender ; the head is wedge-shaped, becoming 

 very narrow on the plantar side ; the shaft is obscurely trihedral, 

 flattened on the tibial and rounded on the other sides. Owing to the 

 shortness of the mesocuneiform. Mt. II rises above the level of both 

 I and III and is thus wedged in between the ecto- and entocu- 

 neiforms, an arrangement which is nearly universal among the fissi- 

 pede carnivores. On the fibular side there is a slight depression for 

 Mt. Ill, but this digit is not interlocked with its neighbors so 

 firmly as the three external ones. 



The third metatarsal is decidedly the heaviest, though not the 

 longest of the series, and the proximal portion is especially broad ; 

 on the fibular side of this end is a very deep depression, into which 

 fits a corresponding projection from Mt. IV. The facet for the 

 ectocuneiform is very obliquely placed with reference to the long 

 axis, rising strongly towards the fibular side, and has the or- 

 dinary feline arrangement, the two facets for Mt, IV being separated 

 by a deep emargination, and the plantar side of the proximal end 

 very much constricted. The shaft is very nearly straight. This 

 bone articulates only with the ectocuneiform, being excluded from 



