. Annual report. 1st-12th, 1867-1878. Geology. OSTEOLOGY OF THE CATHARTID^E. 767 the great air passages, for they are more than foramina, that lead into the bone. ISTo kypocleidium is found attached to the thoroughly united clavicles of these birds, below, but a little ridge occupies the usual site be- neath and a characteristic tip projects from in front in all of them. Be- hind the borders are rounded, in front they are sharpened and produced out to the point of the aforesaid tip or anterior projection. With the scapular apparatus in position, we find that the axis of the shafts o
. Annual report. 1st-12th, 1867-1878. Geology. OSTEOLOGY OF THE CATHARTID^E. 767 the great air passages, for they are more than foramina, that lead into the bone. ISTo kypocleidium is found attached to the thoroughly united clavicles of these birds, below, but a little ridge occupies the usual site be- neath and a characteristic tip projects from in front in all of them. Be- hind the borders are rounded, in front they are sharpened and produced out to the point of the aforesaid tip or anterior projection. With the scapular apparatus in position, we find that the axis of the shafts of the coracoids are in line with the long axis of the sternal body ; that these bones diverge from each other at an angle that is equal to the angle of the clavicular fourchette. From behind their heads the articulated scapulae spring out at nearly right angles, and pass backwards parallel with each other, to be deflected outwards only as we near their posterior points or extremities: After closing in the large "tendinal foramina" by its broad superior dilatations, the furculum dips directly backwards to bring its lower arch into the recess of the anterior concavity of the carina of the sternum, but it never touches this bone at that point, and its near approach seems to vary for the same species; it is quite distant in the specimen of the King Vulture we present in figure 105, but in another it comes much nearer. In the vast majority of the diurnal Falconidce of this country, and, no doubt, in those of the Old World too, the clavicular heads have a much more extensive articulation with the superior ends of the coracoids than. Circus hudsonius. we have just ascribed to the Cathartidco; this arrangement is closely followed by Neophron, and, in short, the entire scapular apparatus of this bird is indubitably stamped with the well-known characteristics that mark this arch among the Hawks and Eagles. So interesting and. Please note that these images are extracted from sca
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