MONOTUEMATA. 
27 
and suddenly bent inwards (but do not meet) at their extremity. 
The palate is of great extent. 
The rami of the lower jaw ore long, nearly cylindrical in the 
middle, hut expanded to form the alveoloi of the great horny 
tooth. Each ramus, viewed from the outer side, presents a slight 
sigmoid curve, being slightly arched in the middle, and having 
the condyloid portion curved gently upwards. The condyle is 
broader than long, broad externally, and narrow internally, and 
moderately convex. On the inner side of the rannis is a tubercle, 
situated about two lines behind the molar tooth, and which gives 
attachment to the internal pterygoid muscle; and oil the upper 
Burfnce of the jaw*, nearly in n line with this tubercle, is a depres¬ 
sion indicating the point of insertion of the temporal muscle; 
immediately under this point, on the outer side of the jaw, is a 
very large cavity, which runs inwards, and is suddenly contracted 
beneath the molar tooth. The dental canal is a large opening, and 
may be seen on the inner side of the jaw*, under the posterior 
margin of the tooth : it has two outlets; one on the outer side of 
the jaw, in a line with the front of the tooth, and the other on 
the under side, at a short distance from the extremity of the jaw. 
The rami meet, and join immediately behind the last mentioned 
opening, hut are loosely attached, and diverge again at the apex. 
The apical portion of the ramus is depressed, ami exhibits a long 
shallow groove along the outer edge, in which the anterior narrow 
homy tooth is situated. 
Inches. Lines. 
Total length of cranium .3 11 
Greatest width (which is at the hinder root of the zygoma) 1 9 
Width between orbits ... ... ... ... ... 0 G 
Width at the tip of the intermaxillary bones. 1 1 
Length of zygomatic arch 1 3 
In a skeleton in the British Museum collection, I find the skull 
considerably larger than indicated by the above dimensions; it 
being four inches and two lines in length, and two inches in 
width behind. The lower jaw of this skull is three inches and 
ten lines long. 
The vertebnc in the skeleton arc fifty in number, of which 7 are 
cervical, 17 dorsal, 2 lumbar, 2 sacral, and 22 caudal. The cer¬ 
vical vertebrae, as Prof. Owen observes, are remarkable for having 
