CREODONTA. 
131 
end of an unrecognized, bone is iDreserved. It is mucli narrowed, the entire 
extremity being occupied by the distal tuberosity, which is moderately 
concave on the inner side. The external face is convex, and there are 
two internal faces, separated by a right angle. It may be the superior 
extremity of the ilium: if so, its form is unusually narrowed. 
The head of the radius is a transverse oval, presenting a shallow con¬ 
cavity to the humerus. The proximal end is slightly curved, with a strong, 
grooved biceps insertion on the convexity. The distal end is subtriangular, 
with the narrow base inward. The external border is acute; and just within 
it, on the superior face, is a subacute tuberosity. A low, short ridge, pro¬ 
duced backward from the latter, divides the upper side into two shallow 
grooves, the inner and much the wider being bounded by a tuberosity, 
which forms the supero-intenial angle of the extremity. This is separated 
by a narrow groove from a median inner tuberosity, which is in turn sep¬ 
arated by a larger groove from an inferior, inner, prominent angle. The 
articular face is concave. 
Length of the humerus to the end of the deltoid crest. 0. 048 
Long diameter of the shaft at the end of the deltoid crest. 0. 014 
Short diameter of the same at the end of the deltoid crest. . . 0. 009 
Long diameter of the head of the humerus. 0. 021 
Long diameter of the proximal condyle of the humerus. 0. 017 
Long diameter of the shaft just below the deltoid crest... 0. 010 
Transverse extent of the distal extremity . . . 0. 028 
Transverse extent of the distal condyles.. 0. 0105 
Antero posterior diameter of the condyles within. 0. 0110 
Antero posterior diameter of the same at the middle. 0.0060 
Depth of the ulna at the cotylus.. 0. 0093 
Depth of the same at the olecranon.... 0. 0110 
Width of the same at the olecranon below.... 0. 0115 
Width of the same below the cotylus.•.. . . 0. 0050 
Long diameter of the head of the radius. 0.0110 
Long diameter of the shaft of the radius. 0. 0080 
Long diameter of the distal end of the radius... 0. 0130 
Short diameter of the same. 0.0100 
Length of the centrum of a cervical vertebra. . .. 0. 0130 
Width of the same... .. . 0. 0100 
Length of the centrum of a dorsal vertebra. . . 0. 0100 
Width of the same. 0.0100 
