Sir Everard Home on the manatee and dugong. 391 
of curvature is only two inches. The bones of the ear re- 
semble those of the dugong. 
The skeleton in the general view is similar to that of the 
dugong. The number of vertebrae is forty-eight, seven to 
the neck, seventeen to the back, twenty-four to the tail, which 
last have long transverse processes tipped with cartilages. 
The ribs are thicker and more massy than in the dugong, and 
considerably more spread out. There are seventeen on each 
side. The great and little toe have only two phalanges. The 
toe next the great one has three, the third four, and the fourth 
toe three phalanges : these are shown in the drawing of the 
skeleton. 
The stomach differs from that of the dugong in the solid 
glandular part being more pyramidal, and connected to the 
general cavity by a neck, and the two lateral pouches being 
wider and shorter, the posterior the largest. 
The food was found to be fuci. 
The caecum consists of a large globular bag with two 
finger-like hollow processes, unlike the caecum in other 
animals, and therefore is represented in the annexed drawing. 
The uterus resembles that of the dugong. 
The heart and lungs were not in a state to be examined. 
In these two species of this extraordinary tribe of animals, 
between which there is so great a resemblance, the teeth are 
totally different, which shows the mode of classing animals 
from the appearance of the teeth to be very erroneous. 
The engravings. Plates XXVI. XXVII. XXVIII. XXIX. 
require no particular explanation, as the scale is marked on 
the plates. 
