524 
Proceedings of the Royal Society 
the premaxillaries projected 6 inches beyond the superior maxillaries. 
The upper surface of each nasal hone was 8J inches long, flattened 
in the posterior third, hut slightly concave in the anterior two- 
thirds, owing to the inner border of that part of the hone being raised 
into a low longitudinal ridge. The anterior borders of the two hones 
were truncated, and formed together almost a straight line. The 
breadth of each hone at its posterior end was 1 inch, and at its 
anterior end 2 J inches. The premaxilla passed hack as a thin plate 
between the nasal and superior maxilla, as far as the posterior end of 
the nasal. The superior maxilla passed hack for 3 inches beyond 
the posterior end of the nasal. 
The orbital border of the frontal bone was 1 4 inches in length ; 
the antero-posterior diameter of the inner part of this bone was 
16 inches. The anterior borders of this bone sloped outwards and 
slightly backwards, whilst the posterior border was almost trans- 
verse. 
The anterior border of the occipital bone was 10 \ inches wide, 
and almost transverse ; the posterior border was 31 f inches, and 
presented on each side from the foramen magnum outwards two con- 
cavities separated by an intermediate convexity. 
The malar was 12 inches long, inclusive of the thin plate between 
the lachrymal and superior maxilla ; the part which formed the 
proper lower boundary of the orbit was 8 inches. The lachrymal, 
8J inches long, was a thin plate of bone except at the anterior end, 
which was tub emulated. 
The beak arched in the antero-posterior direction from base to 
tip, and the highest point of this arch was 5 inches- above the chord 
of the arc. 
The mandible was not strongly curved. The length of the lower 
jaw in a straight line was 8 feet inches ; and along the outer 
convex surface 8 feet 8 inches. The superior border was 1 1 inches 
at its farthest point from the chord of the arc. The coronoid process 
was low and triangular, its base was 8j inches long, and its height 
from the base line was 3J inches. The depth of the mandible, 
including the coronoid process, was Ilf inches. 
The hyoid closely resembles Kudolphi’s figure* and, as it has not 
hitherto been properly described, and is so characteristic of this 
species, I shall give an account of it. The inferior surface of the 
