magnum the distance is 13 mm., the foramen itself being* 
slightly under 10 mm. in vertical diameter and rather ever 10 
mm. in transverse diameter. The occipital condyle is nearly 
round, is centrally impressed with a groove, and has a diameter 
of 4 111m. long in either direction. The foramen for the “ vagus ’* 
and “ glossopharyngeal nerves n :’s 9 mm. from the centre of the 
condyle, and that for the transmission of the “ hypoglossal “ 4 
111111. from the centre of the condyle, while the “ carotid ” canal 
is 13 mm. from the same point. 
SCLEROTIC RJXGS. 
The eyes of the specimen were but slightly dissected, and 
are still available for study. Apparently the sclerotic ring- 
measure 38 111111. in diameter, with a rim depth of 16 111111. 
JAWS. 
The united rami of the mandible have a total length of 94 
111111. and a depth in the coronoid regions of 13 111111., while the 
symphysis is 25 111111. long. Idle jaws arc as a whole powerfully 
constructed, and their articular cavities are deeply impressed. 
H VOIDS. 
1 he thyro-hyals are compounded out of two pieces only, 
upon either side of the arch, instead of several, as in the case of 
the chestnut-laced owl. The chords of the arcs of these tlivro- 
hyals measure 65 111111; the basi-hyal is 24 mm. long, and the 
uro-hyal 15 111111. 
STERN I'M. 
I he sternum has a total length of 125 111111., with a maximum 
anterior width of 60 111111.. and a similar posterior width of 66 
111111. If the keel is pressed against the measuring base board, 
and the costal border kept parallel with the base line, the depth 
of the entire sternum will be found to be exactly 57 111111. The 
length of the costal articular border is 60 111111. The internal 
depth of the sternum is 33 111111., measured between the fifth and 
sixth articular cavities. It should be particularly noted that 
the point just named is not situated between the fifth and sixth 
ribs, but midway between the fifth and sixth articular fossae of 
the costal series. I he articular tracts of the coracoid bones are 
deeply marked, and meet with an angular overlap upon the 
central line of their lower concave portions, the left groove pass¬ 
ing the centre, thus taking the left coracoid below the point of 
the right. This overlap cuts away a considerable part of the 
manubrium, and keeps ’.t 8 111111. below the upper coracoidal 
border. The sternum of this eagle, unlike that of the Indian 
