478 T'ransaetions.—Zboology. 
the notch, and a flat area extending forward to the middle of the'beak ; pre- 
maxillaries only slightly shorter posteriorly, with a comparatively small 
depressed triangular area in front of the nasal aperture, which is crescentic ; 
rostrum bevelled, with a narrow intermaxillary groove widening towards 
the tip. 
Palate flat, contracted behind, with a mesial groove towards the tip, m 
which the premaxille and the vomer are exposed. Dental groove divided 
into large deep alveoli, and extending along the margin of the beak, as far 
back as a constriction, which occurs two inches in advance of the notch. 
Lowerjaw massive, 23 —23, irregular. Teeth 1:3 inches in length, the exposed 
portion being bluntly conical and incurved, and the fangs generally crooked. 
Ear-bell triangular, moderately solid, with a deep groove on the exterior. 
It measures 1:5 x 8 inches. 
Vertebre.—Cervical, seven in number, have the atlas and axis anchylosed, 
forming a solid mass, with the spinous process compressed, beak-like, and 
directed backwards. Width of the anterior articular surface is 4:8 inches. 
The posterior cervieals are very short and compressed, and have large 
slender neural arches, the third cervieal only has a lateral foramen, and the 
seventh is without any inferior lateral process. 
The dorsals are twelve in number, and have stout lateral processes, 
which from the eighth to the eighteenth vertebre spring from the neural 
arches, and then descend on to the centrum. 
The posterior vertebre have thin expanded processes and rounded 
centra as far as the 88th, where the metapophysis and chevron bones com- 
mence. 
The first appearance of a lateral foramen, is on the 46th. The 
lateral process disappears on the 48th, and the 94th is the last vertebra 
that has a neural canal. The chevron bones, seventeen in number, extend 
from the 88th to the 55th vertebra, The centra of the caudals are oblong, 
and taper rapidly in size from the 55th to the 64th, 
FHibs, —The first rib is compressed, wide, and strongly curved. The first 
four only have tubercles. Sternum is narrow {and elongated, and consists 
of four segments, which are strongly united, the anterior being ex- 
panded into one anterior and two posterior notches. There are five 
articular attachments on each side. Scapula triangular, the posterior 
margin ascending at 20° to the plane of the glenoid articulation. Anterior 
superior angle is produced and slightly hooked over the acromion process, 
