vulture, has no posterior fontanelles, an:! the notching is also 
slight. A further comparison of the two sterna shows that the 
eagle is in every sense heavier and less gracefully built than 
the vulture, while the curve of the keel is flatter, and does 
not extend so far upwards in the direction of the manubrium. 
The actual measurements for the two sterna in question are as 
follow:— 
Eagle—42 mm. from end of keel to the top of the cora- 
coidal articular surface. 
Vulture—36 mm. from end of keel to the top of the cora- 
coidal articular surface. 
Which amount of departure in the protraction of a curve makes 
a considerable difference to the general outline. 
SCAPOLAR ARCH. 
Although in strictest truth it cannot be said that the 
scapula is ankylose ! to the coracoid in this bird, yet the liga¬ 
mentous union has so closely approached the ossific stage that 
to all practical purposes the union is complete—at least in the 
specimen here considered—doubtless due to age. The scapula 
contributes a moiety of exactly one-half to the glenoid cavity 
for the humerus, and when that cavity is seen with its articular 
cushions, synovial membrane, etc., the union between the two 
bones appears most complete. 
The scapula itself has a total length of 100 mm., and is 
rather less riblike in shape than usual—markedly so when com¬ 
pared with that of the vulture. The outer border is. convexo- 
concave, the concave portion being nearest the tip or distal end., 
d'he inner border is almost uniformly concave, the line breaking 
somewhat during the last quarter of its length. The greatest 
width of the bone is at its articular (or proximal) end, where it 
expands to 25 mm., after a previous contraction to 10 mm. At 
26 mm. from the distal end it is 15 mm. in width. 
CORACOID. 
For the sake of convenience, a single coracoid is here 
selected for measurement and description, as in the case of the 
scapula just dealt with. The greatest length of the bone is 77 
111m., its proximal width is 37 mm., and its distal width—taken 
from the articular cavity of the humerus to the subclivicular 
process—is 26 mm. Owing to the twisting of the bone, this 
latter measurement of width is practically at a right angle to 
the proximal width, the latter being taken from the inner 
articular point to the hyosternal process. A slit-like foramen, 
3 111111. long, pierces the shaft 10 mm. below the “ hyosternal 
