DR. J. MURIE ON THE ANATOMY OF THE SEA-LION. 535 
The hair is more or less of a uniform length over the whole of the body, but it is 
rather shorter on the limbs. Underneath the lower jaw the hair is rougher and 
shaggier in appearance, and, on account of its being also somewhat longer, produces 
a beard-like aspect. Individual hairs plucked from this part measured seven tenths 
and nine tenths of an inch respectively. Upon the back of the head the length of the 
hairs averages from five to eight tenths of an inch; and on the outer side of the pectoral 
limbs they are almost as long. One patch near the axilla had a very marked shaggy 
look, as if longer in the pile than the surrounding portions; but on accurate examination 
this did not turn out to be the case. On the loins this hairy coat is more uniform as 
regards length ; it is here shortest—namely, about half an inch. 
Beside the ordinary hairs of the pelage, there is a distinct crop of underwool, as in 
the Fur-Seals. This undercoat is not thickly set, but distributed in delicate, short 
and fine hairs placed at the base of the other longer ones. It appeared to exist upon 
the greater part of the body, excepting, it may be, on the loins, where traces were not 
distinctly recognized. 
7. Mamme.—tIn the Otaria under description there are four teats in all, and these 
are distributed in pairs. The hinder pair are six inches in advance of the penis, and 
the anterior pair are again nine inches anterior to these hinder ones. The two anterior 
ones are each about four inches distant from the median line of the abdomen, and three 
inches posterior to the hinder part of the sternum. The posterior ones differ, inasmuch 
as they are each but two inches distant from the median line. Expressed in other 
words, the front pair of teats are eight inches apart, the hinder ones but four inches. 
The teats in this male animal are very slightly raised above the surface of the skin; 
but each of them possesses a long and capacious duct, which passes through the super- 
ficial and deep dermal tissues, and can also readily be traced for some distance among 
the fat. 
8. Eye.—The appearances of the eye and surrounding structures after death are as 
undernoted. ‘The fissura palpebrarum then possessed a wide elliptical form (Pl. LXTX. 
fig. 9), the anterior canthus being rather the lower of the two. The aperture from 
the anterior (a.c) to the posterior canthus measured an inch in a direct line, and the 
diameter in the middle 0-Ginch. ‘The margin of each eyelid is of a black colour and 
carunculated; and the narrow palpebre are bare of hair for not more than 0-1 of an 
inch. ‘The nictitating membrane in its contracted state (7) occupies only a small portion 
of the anterior inferior corner of the orbit. 
There is no trace of eyelashes. 
On the right side one solitary hair (¢) alone represents the eyebrow; but on the left 
side two hairs are found. The one hair on the right supraorbital region is situated at 
the distance of 0-8 of an inch from the anterior angle of the eye, and almost perpen- 
dicular to it. The two hairs on the left side, with a nearly similar position, are 
separated from one another by an interval of 0-2 of an inch. The length of these 
VOL. VII.—PART Vil. January, 1872. 4u 
