318 ON THE EXTERNAL CHARACTERS AND 



T. Z. S. 1882, There are four mammae, abdominal in position. The posterior pair, 

 situated about 2 inches from the middle line, are 5'75 inches in front of 

 the opening for the penis ; the anterior ones, which lie about 3 inches 

 from the middle, are 10-25 inches in front of these. 



There is no true scrotum; but a bare patch of dark, rugose skin 

 surrounds the anus for about 4 inches each way. This did not in the 

 least hang down ; neither did the testes project into it at all, though 

 possibly at certain times of the year they may descend into this sort of 

 rudimentary scrotum, or the descent may even be regulated by the con- 

 dition of the animal. 



No such distinct, Balce.noptera-likQ pectoral plaits of skin as those 

 figured by Dr. Murie in Otaria jubata (I. c. pi. Ixix. fig. 7) could be made 

 out here. There are a few indistinct lines of folding in the region of each 

 axilla ; but their presence seems due to the " lie " of the hairs, and not 

 to any real growing or elevation of the skin, their situation probably 

 depending on the position of the body. 



No underfur could anywhere be found. The skin itself, where hair- 

 covered, is pale flesh-coloured. 



The following description of the pelage was taken from the animal as 

 it lay, after having been thoroughly dried for a day or two. 



The general tint is dark umber-brown, darkest and blackest on the 

 neck, brownest on the back, and lightest on the chest. The muzzle is 

 lighter brown. On the chest and pectoral limbs the coat is very glossy ; 

 on the pelvic limbs it is less so. The hairs of the head and neck are 

 chiefly deep black-brown, tipped with pale brown ; mingled with these 

 are numerous white ones, which are most numerous on the sides of the 

 head, and on the sort of crest along the top of the head, the hairs here 

 being rather longer than elsewhere. The space round the eyelids is 

 slightly reddish ; and there is a pale spot above the eyes. Between the 

 eyes the hairs are shorter, and of a reddish-brown colour. The eyebrows 

 are represented by three, or, on the right side, two small curved hairs of 

 pale colour, slightly marked with darker ; the median hair is much the 

 longest. Bound the nose the hairs are brown and dirty white. The 

 sides of the face below and above the lips, as well as the chin, are pale 

 rufous-brown; but the margins of the lips themselves are everywhere 

 dark. In the region whence the whiskers arise the cheeks are mottled 

 with dark brown and dirty white hairs. The whiskers are about thirty- 

 five in number on each side, arranged pretty regularly in six horizontal 

 rows. The uppermost row of these contains only three whiskers, all 

 small and short ; but below and posteriorly they increase in size and 

 number. The longest row has about seven whiskers. The greater part 

 of the whiskers are white, including all the longer ones ; but some three 

 or four on each side are blackish. 



The ears are covered with shorter, dirty white and grey hairs. 



