OF DENISON UNIVERSITY, 
9 
of the quadrato-jugal. The lachry7nal bone is very large and hoe- 
shaped, occupying the whole anterior aspect of the orbit. A very 
slender curved process extends backward from its lower angle. The 
lachrymo-nasal space between this and the maxillary permits the free 
movement of the beak on the skull. The lachrymo-nasal foramen is 
quadrate. The optic foramen occupies its usual position on the mar- 
gin of the ali-spkenoid, which is inseparably united with the septum 
inU'ao7'hitale and this with the ethmoid still farther forward. There 
is a large irregular foramen above the optic. The greater part of the 
side of the skull behind the orbit is formed by the squamosal^ which is 
strongly ridged and forms, first, a strong flange-like process behind the 
orbit and, second, a very long process projecting forward toward the 
corresponding process of the lachrymal. The ot'bito-spheiioid was not 
detected as a distinct bone, but irregular processes on the ali-sphenoid 
may represent it. The sclerotals are membranous bones, which unite 
to form a ring about the globe of the eye. As seen from below, sev- 
eral new bones appear. At the back of the skull is the large foramen 
subcordate and quadrate in form and about .20 in width. 
Above, it is bounded by the supraoccipital^ laterally by the exoccipitals^ 
and below by the basioccipital. These bones are intimately united 
and the sutures quite obliterated. There is an impressed line on 
either side the' foramen. The single occipital condyle is a small knob- 
like process. The basioccipital is quadrate and near its lateral mar- 
gins are the foramina of the carotid and the seventh, ninth, tenth and 
eleventh nerves. The squamosal expands into a large shield-like cov- 
ering over the auditory meatus. Just inside of the quadrate bone can 
be seen a bony sheath which indicates the former point of union of the 
Meckel’s cartilage. Within the meatus the minute auditory ossicles 
can be seen with a glass. The sphenoid is a pyramidal bone, soon be- 
coming a vertical plate fusing with the ethmoid and inter-orbital sep- 
tum. Here also the obliteration of sutures is complete. The vo7ner 
is present but inconspicuous. The 7naxillaries form the sides of the 
beak and, in connection with the premaxillary, form a continuous bony 
ceiling to the roof of the mouth, which is covered with a thick horny 
sheath, so thickened on the edges as to make the knife-like cutting 
to77iia. The palatals are movably articulated to the edges of the max- 
illaries by broad bases so that they nearly meet on the median line and 
reach nearly to the jugal, externally. Posteriorly, the palatals extend 
into forked processes, making the whole length .40 of an inch. From 
