OF THE SUMATRAN RHINOCEROS. 133 
forwards ; they are 33 inches deep behind, where they are lost on the 
fauces, and they are about 9 inches long. The epithelium covering 
them is nearly smooth, and is very thick. 
The tongue is elongate, and in shape much like that of the Rumi- 
nants, being thin from above downwards in front, and deep behind, 
with a somewhat sudden transition from one to the other. From the 
apex to the posterior of the circumvallate papille is 15 inches, and 
from the epiglottis to the same papille is 2? inches. In the middle of 
the anterior thin portion the breadth is 2¢ inches, and in the middle 
of the posterior moiety it is 44 inches. 
There are many circumyallate papille, 33 on one side and 26 on 
the other, forming two clusters, separated by a smooth median longi- 
tudinal line. Each cluster is triangular in shape; and the two acute- 
angled triangles they form lie side by side and have their apices 
directed backwards. The individual papille which go to form them 
are largest posteriorly, reaching a diameter of } inch; anteriorly they Page 95. 
get smaller, and cease by becoming more and more scattered. The 
rest of the tongue is covered uniformly with filiform papille, among 
which no fungiformes are to be seen. 
The soft palate runs downwards as well as backwards; and its 
posterior portion, as Professor Flower specially pointed out to me, so 
- closely embraces the base of the tongue that, except when in the act 
of swallowing, the epiglottis always projects quite into the posterior 
narial chamber, as in the horse and many other animals. The an- 
terior portion of the soft palate is 2 inch thick, and very glandular. 
A collection of glands of considerable size on each side of the fauces 
are the only representatives of the tonsils. 
The salivary glands present the usual characters. The parotid is 
much the largest. It weighs 1 Ib. 1 oz., and is of an irregular semi- 
lunar shape, the concavity embracing the superior portion of the angle 
of the jaw; it is mostly situated between the body of the masseter and 
the posterior insertion of the sterno-mastoid muscle. It lies almost 
entirely below the level of the zygoma, sending up a small portion 
into the interval between it and the external auditory meatus. Its 
duct, which is 14 inches long, commences at the inferior angle of the 
gland, and, as in the Ungulata generally, runs round the lower margin 
of insertion of the masseter muscle, and up along its anterior border 
till it pierces the buccinator, to terminate by a simple orifice in the 
well-marked fossa between the cheek-pad described above and the 
superior gum, in a line with the interval between the first and second 
upper true molar teeth. 
The submazillary gland weighs 24 oz., and is irregularly cubical in 
shape. It is situated just under the angle of the jaw, covered by 
the digastric muscle. The duct is 134 inches long; anteriorly it is 
