LEONTINIA 113 
it proper to associate these fore limb bones with these skulls. 
The humerus is a stout bone, of medium length, with a 
large sessile, and but little rounded head. The external 
tuberosity is wide, thick and projects a little above the 
head, while the internal tuberosity is so small as to be 
almost negligible. The shaft is flattened laterally at the 
upper end, but distally is compressed in the antero-pos- 
terior direction. The supratrochlear fossa is shallow, the 
anconeal deep, but there is no foramen connecting them. 
The external condyle is small, the internal much larger. 
The trochlea is narrow, with a swollen articular area for 
the radius, and a wider saddle-like one for the ulna. The 
ulna is a stout, nearly straight bone, slightly longer than 
the humerus. The olecranon process, though large, is not 
excessive. The sigmoid notch makes a deep semicircular 
cavity, with the articular facets expanding on either side. 
It was closely fitted to the radius so as to allow little or no 
rotary motion of the forearm. The facet for the radius is 
a narrow band-like area just below the sigmoid notch. The 
shaft is almost rectangular in section. Distally the ulna 
contracts sharply into a heavy styloid process, on the end 
of which is a large convex facet for the pyramidal, which 
merges without interruption into the facet for the pisiform. 
The radius is a slenderer bone, with a relatively small prox- 
imal head, but distally expanded into a much larger articu- 
lar end. My specimen is considerably weathered, but 
shows a wide shallow articular facet for the humerus, and 
a band-like facet for the ulna, but otherwise it gives little 
more than the length. 
Of the hind limb, Gaudry* figures the astragulus and 
the calcaneum, the former short and with a low trochlea, 
the latter also short and with a broad facet for the fibula. 
Gaudry also states that the foot was tridactyle and planti- 
grade, but I am doubtful of the plantigrade feature. 
* Anales Palaeontologie, 1906, t. I, p. 28. 
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