CREODONTA. 333 



tei"ioi' direction It thus approaches the form of a metatarsal, but is not so 

 strongly excavated, nor is the head notched on either side. The unciform 

 face is convex anteroposteriorly and plane transversely. 



The femur is broken up so that I cannot restore it. The head of the 

 tibia is gone, but a considerable part of the astragalar face is preserved. This 

 is transvei'se to the long axis of the tibia. It is narrowed anteroposteriorly 

 next the fibular facet. Malleolus lost. The shaft is robust, and does not 

 expand distally for articulation with the astragalus. Three centimeters 

 proximal to the distal end, the external side thi-ows out a low, rough, i-idge- 

 like tuberosity. Above the middle, the crest turns outwards, leaving the 

 internal face convex. There is a broken patella, which has one facet much 

 wider than the other. 



The astragalus has the trochlear portion a little oblique. That is, the 

 internal crest is a little lower than the external, and the inner face is a little 

 sloping. The latter is impressed by a fossa above the posterior part of the 

 sustentacular facet, which runs out on the neck. The trochlea has a shallow 

 groove which is nearer the external than the internal crest, and which 

 passes entirely round the posterior aspect to the plane of the inferior face 

 of the astragalus. The groove for the flexor tendon is thus entirely inclosed 

 and issues on the inferior face at the posterior extremity of the groove which 

 separates the sustentacular from the condylar facets. The external crest of 

 the trochlea is less prominent posteriorly than the internal, thus reversing 

 the relations of the superior part. The internal ridge becomes quite robust, 

 but does not flatten out and project sub-horizontally as in Oxycena forcipata. 

 The fibular face is vertical; neither its anterior nor posterior angles are pro- 

 duced. The neck is somewhat contracted (the internal side is injured). The 

 head is a transverse oval, strongly convex verticalh-, moderately so horizont- 

 ally, and without flattening. A mesocune'iform (or possibly edocuneiform) 

 bone is wedged-shaped in horizontal section, without posterior tuberosity,, 

 and its anterior face is a slightly oblique square. The narrower facet is ob- 

 lique in the transverse sense. 



The metatarsals are rejjresented, excepting the first and second. The 

 only complete one is the fifth. The heads of the third and fourth are much 

 like those of Oxycena forciputu, and of about the same size. Their anterior 



