VERTEBRATE REMAINS, PORT KENNEDY BONE DEPOSIT. 243 



The first (and last) inferior true molar which represents the fourth individual, 

 is perfect, except in the loss of the anterior root. The blade of the metaconid is 

 nearly twice as long as that of the paraconid. There is no posterior heel, but there 

 is a thickening of the posterior border, which is separated at its apex from the pos- 

 terior edge of the metaconid by a slight notch, which represents it. The anterior 

 base is also swollen. Where not worn by use, the enamel has a weak and fine 

 plication. Diameters of crown : — Total anteroposterior of metaconid, 16; vertical, 

 paraconid 12, metaconid 15 mm. 



The distal part of a right humerus, I suspect from its characters, to belong to 

 this species. As compared with that of Uncia inexpectata it differs in its superior 

 size, in the weaker ectepicondylar foramen, and in the fact that the internal border 

 of the condyle is discontinuous at the distal convexity. In other words, the internal 

 border of the olecranon fossa, which is parallel to the posterior part of the ulnar 

 border of the condyle, disappears distally, and the radial border of the condyle 

 commences far internal to it, and is parallel with the anterior part of the ulnar 

 border. These two parts of the internal border of the condyle are connected by a 

 continuous angle in U. inexpectata. The external epicondyle is not so large rela- 

 tively in S. gracilis as in U. inexpectata. The internal epicondyle is low and very 

 obtuse. The internal distal marginal crest is moderately prominent, without angle, 

 and continues as a low ridge on the posterior median line of the shaft. 



Measurements. 



mm. 

 Humerus. 



t^. p n r , \ anteroposterior ; 



Diameters ot sliatt < , L 



[ transverse; 



Diameters of distal end 



34 

 22 

 anteroposterior, middle ; 21 



" external ; 43 



transverse, total ; 69 



" of condyle; 49 



The astragalus is about the size of that of the lion, and displays the typical 

 feline character of the enclosed astragalar notch, forming a foramen. The trochlea 

 is moderately oblique, and is relatively wider and natter than the modern Felidse, 

 A difference between the bone and the astragalus of the leopard ( Uncia pardus) is 

 seen in the more internal position of the apex of the posterior inferior border. It 

 is below the foramen in the latter ; interior to this point in the former. 



Calcania of the right side of two individuals are preserved, and are about 

 the size of those of the lion. The extremity of the tuber has a strong vertical 

 concavity. The superior edge is rather narrow ; the inferior face wider, about as in 

 Uncia sp. The astragalar facets have the same shape as in Uncia sp. ; and the pre- 

 sustentacular fossa and the groove above it are well-marked. The longitudinal 

 groove of the superior part of the external face with the ridge bounding it below, 

 is slightly developed. The external tuberosity adjacent to the head is well-marked, 

 and the cuboid facet is more angulate externally than in Felis sp. 



