65 
The thymus of moderate size, at the usual situation in the chest, 
and sending no process to the neck. The spleen and a spleniculus 
together scarcely so big as a walnut. A flat rounded gland, about 
three-fourths of an inch in diameter, situated above the renal vessels 
on each side, and at a distance of upwards of an inch from the kid- 
ney, had more the appearance of a lymphatic gland than of the supra- 
renal body. 
On opening the chest, each lung was seen to be covered with lym- 
phatic vessels, running to a gland at the sterno-ventral aspect of the 
free edge of the lung. The gland was very juicy, had every appear- 
ance of a lymphatic gland, and measured one inch and a quarter long 
and five-eighths broad. This pulmonary gland in the adult is harder, 
more fibrous, and less juicy, and measures four and a half inches long 
by two broad. 
The stomach with two chief compartments; the first continuing 
backwards on a line with the gullet, and lined, like it, with a white 
thick smooth membrane and epithelium ; the second, or true digest- 
ing stomach, lined with a mucous membrane in folds, and somewhat 
smaller than the first, of a more rounded form, and extending from 
its middle to the duodenum. In the first was a quantity of thick, 
opake, whitish fluid, and in the second a little mucus. 
There was no gall-bladder. The bile-duct, close to the duodenum, 
was as thick as a goose quill. The last portion of the intestine was 
full of meconium, like that of the human feetus. 
There was no cecum; the intestines were nearly uniform in size 
throughout, their surface smooth and not at all cellulated. Length 
of the whole intestinal canal, from stomach to vent, thirty feet. 
The kidneys large and lobulated throughout ; the lobules from a 
quarter to half an inch in diameter, and having each a very delicate 
capsule of connecting tissue. The blood-vessels enter the kidney, not 
near its middle, but at its fore and inner or atlanto-mesial end. 
The mesenteric glands moderate in size and number, of uniform 
consistency, and without any cavity or hollow in them, unlike those 
of the whale described by Mr. Abernethy. 
The womb with two horns, and the ovaries in the usual situation ; 
mammary slits on a level with and near to the orifice of the vagina. 
ae bladder empty, and the urethra opening just behind the 
clitoris. 
Descriptive Characters.—Teeth conical and slightly curved inwards, 
from eight to twelve on each side of the jaws, making from thirty-two 
to forty-eight teeth altogether ; but eleven on either side of each jaw 
is a common number, and there is sometimes one more in the upper 
than in the under jaw on each side. Dorsal fin large, convex above 
and extending behind into a hooked or eurved pomt. Pectoral fins 
long, narrow, and tapering toa point. Tail crescent-shaped. Mouth 
sloping downwards and forwards. Eyes above and behind the angles 
of the mouth. Top of the head round, and not prominent, though 
the snout is remarkably so. No nipples yet protruding, but merely 
‘ a longitudinal mammary slit on each side of the orifice of the vagina 
No. CCLII.—Procrepinecs or tHE ZooLoGicaL Society. 
