1884.| 50y [Cope. 



lunar facet by a contraction of the anterior and posterior borders. There 

 is no indication of distinguishing ridge between the lunar and cuneiform 

 facets. The posterior border at their junction is prominent, enclosing a 

 fossa with the scaphoid condyle, which does not, however, excavate the 

 intervening surface. The scaphoid condylo is not divided by a ridge. 



The ulna gradually contracts distally from a robust olecranon. The 

 shaft beyond the humeral cotylus has an oval section, with its long axis 

 forming an angle of 45° to the perpendicular. The olecranon is short and 

 compressed, its posterior border rising nearly as high as the coronoid 

 process. The edges of the humeral cotylus are not flared beyond the 

 shaft. 



In the carpus the unciform nearly reaches the scaphoid, which is sup- 

 ported by the magnum and trapezium. 



The great trochanter of the femur is not produced beyond the line of 

 the head, and is well recurved, enclosing a large fossa. The little trochan- 

 ter is large. The fossa ligamenti teris is submedian, subround and large. 

 Distally, the patellar trochlear groove is quite elevated ; its lateral crests 

 are of equal prominence, and nearly equal superior prolongation. The 

 patellar groove is continued some distance above the crests, but there is 

 no fossa in this region as in the hog. The popliteal fossa is well marked, 

 and the condyloid articular surfaces are not entirely cut off from the 

 rotular. The external linea aspera terminates first in a rugose muscular 

 insertion, and then in a shallow fossa a short distance above the condyle. 

 There is no crest nor deep fossa. This element is more like the corre- 

 sponding one in Dicotyles torquatus than in any other mammal. The 

 patella is a short wide bone, with a large anteroposterior diameter. One 

 extremity is acute, the opposite one truncate. 



The head of the tibia is also like that of Dicotyles. The spine is divided 

 as usual, and not much elevated ; the crest is prominent, but is wide and 

 truncate above at the head. It is not excavated as in Sus. The external 

 tendinous notch is well marked. The external margin of the shaft does 

 not display any sutural surface for the fibula. The surface of attachment 

 of an external malleolus is distinct. The internal malleolar process is nar- 

 row and is produced well downwards. The anterior intertrochlear angle 

 is prominent ; the posterior only convex. The trochleas are deep, the 

 outer being both the wider and the deeper. 



The astragalus presents well marked characters. The distal extremity 

 displays the two usual parallel trochleae, which are separated by a pro- 

 nounced angle. The cuboid trochlea slopes somewhat backwards, while 

 the navicular is strongly concave. The tibial trochleas are unequal, the 

 internal being smaller than the external. It is separated from the latter 

 by a constriction which is well rounded and not angulate as in the hog. 

 The external side of the astragalus displays a wide malleolar band, a wide 

 posterior and narrow anterior calcaneal facets, and an undivided concavity 

 intervening between the latter. On the inner side, the malleolar face 



