Cope] *-'-)(-) [April 4, 



hind foot in this genus. Behind the navicular facet, on the superior 

 face, is a tuberosity which stops the flexure of the foot by contact with 

 the tibia ; a trace of it is seen in the dog. The calcaneum has the com- 

 pressed form of the digitigrades, but the broader interval, and convex 

 external astragaline facets resemble much more those in the bears. The 

 cuboid facet is a frustrum of a triangle with the apex directed inwards 

 and downwards. 



The metapodial bones are rather elong-ate, and flattened so as to be 

 transverse in position. A second metatarsal is more flattened than 

 corresponding bones of Canis and Felis. Its cuueiform facet is some- 

 what concave transversely. The phalangeal condyles are furnished with 

 an anterior and inferior carina, which is wanting above ; the articular 

 face is wide above as in Cams, and is bounded by a transverse fossa as 

 in digitigrade genera. The phalanges of the first series are elongate 

 and curved as in Felis, being relatively longer than in XJrsus. Phalanges 

 of the other series are quite short. The ungues are short and flattened, 

 their inferior surface is nearly plane, and the superior but little convex. 

 A shallow groove divides the upper face longitudinally to the ex- 

 tremity. The margin below is acute to a slightly contracted neck. 

 There is no indication of collar for reception of the horny sheath, except 

 perhaps a slight area of fracture on each side, and there is no projecting 

 tuberosity below for insertion of flexor tendon. The middle of the 

 proximal part of the unguis is a raised plane, and on each side of it, at 

 the neck, two arterial foramina enter. There is a small foramen in the 

 groove, and several smaller ones near the margin. These ungues re- 

 semble somewhat those of some tortoises. They were found with the 

 other phalanges, with which they agree in size and articulation, and no 

 doubt belong to the same animal. It is evident that they differ in 

 character from those of most existing Carnivora. The penultimate 

 phalanges agree with them in the depressed form of their proximal ar- 

 ticular faces, wanting entirely the triangular form so characteristic of 

 Carnivora, especially of the cats and dogs. The short flat shaft of the 

 same is almost ecpially peculiar. 



The cranium is fragmentary. The malar bone of the right side is 

 similar in position and form to that of the Canidm, especially in the 

 presence of a weak angle only, to mark the posterior border of the orbit. 

 It has a much less expanded union with the maxillary than in these 

 animals, and is proximally shallower, thicker and more prominent. Its 

 posterior portion is more plate-like. 



There are numerous teeth preserved, but separate from the skull and 

 mostly mandibular. The inferior canine is stout especially in the root, 

 which is a flat oval in section. The crown is but little curved, slightly 

 compressed, and without edge or groove. The premolars graduate into 

 the molars, so that the line of distinction is not easily drawn. The 

 first premolar has a single root ; the crown is slightly conic, with a 

 small tubercle at the base behind. This tubercle increases in size on the 



