the anatomy of the dugong. 317 
globular than the human. On the upper or small curvature 
to the left of the entrance of the oesophagus, quite 'at the ex- 
tremity, are situated the gastric glands, forming a rounded 
mass, as in the beaver. The orifices of these glands are 
small, and covered over with a membranous bag, which 
has only one large aperture. The glandular mass is divided 
into two portions. Their appearance is seen in Plate XXVII. 
and resembles more that of the same glands in the ardea 
argala, described in a former paper, than of any quadru- 
ped. The internal surface of this portion of the stomach 
is smooth, but not cuticular ; the coats are thick near the 
cardia, but thin towards the pyloric portion. The communi- 
cation between this and the pyloric portion, is by a round 
aperture three fourths of an inch in diameter, similar to what 
is met with between the different cavities of the stomach in 
the whale tribe. Immediately beyond this orifice there are 
two openings from the pyloric portion, one from the pos- 
terior side into a cul-de-sac six inches long, and one from the 
anterior only three inches in length. This portion is rather 
shorter than the cardiac, is thinner in its coats, has a smooth 
internal surface, and bends a little upon itself before it termi- 
nates in the pylorus, which is marked by a welt, or valve. 
The two appendages to the pyloric portion, differ from those 
in the hippopotamus and the pecari, in being smaller, and 
projecting farther, as well as in not belonging to the cardiac 
portion, as in these animals. All these cavities, including the 
appendages, were distended with fuci in a macerated state, 
undergoing trituration. 
This complex stomach, belonging to an animal whose food 
is nearly the same as that of the hippopotamus, makes it 
MDCCCXX. T t 
