ANATOMY OF THE CALIPOENIAN SEA-LION. 227 



There are four mammse, 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 condition of the animal. 



No such distinct, £alcenoptera-\ike pectoral plaits of skin as those figured by 

 Dr. Murie in Otaria juhata {I. c. pi. Ixix. fig. 7) could be made out here. There 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. Eound 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. Behind the shoulders, 

 along the back and upper parts, the tips of the hairs get lighter brown ; and mixed with 



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