HOOKER’S SEA-LION. 63 
The formula for the milk dentition in this species is probably as follows :— 
3— 3 1—1 4—4 
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The formula for the two adult females in the ‘Discovery’ collection is in each 
case :— 
3—3 1—1 4—4 2—2 
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The skin of one of the females (No. 31) measures 68 inches from nose to tip of 
tail. The length of the fore flipper is 134 inches, the length of the hind flipper 
154 inches. The colouring is a uniform buff, or creamy grey, very slightly darker and 
greyer dorsally owing to the fact that the basal two-thirds of every hair are black and 
only the terminal third is buff, whereas in the lateral and ventral areas the hairs are 
completely buff. 
The fore limb of this adult female carries five minute and rudimentary 
nails. The naked dorsal palmation is carried 44 inches beyond the position of 
the nail in the first digit, 2 inches beyond that of the second digit, 1 inch 
beyond that of the third, and 4 inch beyond that of the fourth and fifth, The 
palmar surface is devoid of hair over its whole extent, forming a sole 12 inches 
in length and 44 inches across the base. The radial border of the limb is also 
devoid of hair on the dorsal surface. In the hind limb, nails 30 mm. in length 
are developed on the three central digits, while the first and fifth are provided 
only with rudimentary suggestions. Beyond the position of the nail on the 
dorsal surface of the first digit is a naked palmation of 13 cm. in length and 4 em. in 
width. Beyond the nail insertion in the second digit there is a palmation 10 em. long, 
in the third 9 cm., in the fourth 9 cm., and in the fifth 9 cm., but the width of the fifth, 
2 c.m., is just double as much as the width of the second, third or fourth. The palmar 
naked sole of the hind limb extends to within 24 inches of the root of the tail, and 
measures 13 inches by 4 inches at its widest part. The same features and the same 
proportions hold good also for the limbs of the young, in which the distribution 
of hair and naked skin is precisely the same as in the adult females. The nostrils 
of the adult female are 22 mm. in length, and the hair-covered space between the 
nostrils and the upper lip is 22 mm. As in most seals, the hair immediately adjoining 
the lip is a darker chestnut red, and of a longer softer character in this seal, especially 
along the lower lip. It is the only part of the adult that retains the chestnut red 
colour characterising the new-born young. 
The females on the sandy beach of Enderby Island were divided into parties which 
were collected around the older rough-haired males. The old males have a far coarser 
and darker hair than the younger males and the females, and have also a very thick 
crisped blackish brown mane, which clothes the whole of the enormously muscular neck. 
In the younger males one sees innumerable scars upon the neck, but these are not 
visible under the crisped mane of the larger males. The mane, no doubt, is developed 
largely as a protection in the fights that constantly occur between them. While 
