MUSEUM OF COMPARATIVE ZOOLOGY. 75 



minal bar of black, and tipped for a greater or less distance with gray. 

 The variation in different individuals in the general color results from the 

 varying extent of the gray at the ends of the hairs. 



{Young.) The general color of the upper surface of the body in the 

 young, previous to the first moult, is uniformly glossy black. The region 

 around the mouth is yellowish-brown. The neck in front is grayish-black. 

 The axilla? are pale yellowish-brown; a somewhat darker .-hade of the 

 same color extends posteriorly and inward towards the median line of the 

 belly, uniting on the anterior portion of the abdomen. The greater part 

 of the lower surface, however, is dusky brownish-gray, the rest being 

 black, but less intensely so than the back. Specimens of equal age vary 

 much in color, one of the young specimens corresponding nearly with the 

 above description, while the other is much darker. 



On the head and sides of the neck a portion of the hairs are found, on 

 close inspection, to be obscurely tipped with gray. After the first moult 

 the pelage becomes gradually lighter, through the extension of the gray 

 at the tips of the hairs, especially in the females, the two sexes 1 cing at first 

 alike. Contrary to what has been asserted, the young are provided from 

 birth with a long thick coat of silky under-fur, of a lighter color than the 

 under fur of the adults 



The Hair. — The double pelage consists of an outer covering of long, 

 flattened, moderately coarse hair, beneath which is a dense coat of long 

 fine silky fur, which reaches on most parts of the body nearly to the ends 

 of the hairs. The hairs are thicker towards the ends than at the base, 

 but their clavate form is most distinctly seen in the first pelage of the 

 young. In length the hair varies greatly on the different parts of the 

 body. It is longest on the top of the head, especially in the males, which 

 have a well-marked crest. The hair is much longer on the anterior half 

 of the body than on the posterior half, it being longest on the hinder part 

 of the neck, where in the males it is very coarse. On the crown the hair 

 has a length of 42 mm.; on the hinder part of the neck it reaches a 

 length of 50 to CO mm. From this point posteriorly it gradually shortens, 

 and near the tail has a length of only 20 mm. It is still shorter on the 

 limbs, the upper side of the digits of the hind limbs being but slightly 

 covered, while the anterior limbs are quite naked as far as the carpus. 

 The males have, much longer hair than the females, in which it is much 

 longer than in Eumetojiias StellerL* 



* From the descriptions of most writers it would seem that the Utaria jubala is pro- 

 vided with a conspicuous mane, but in the few accurate descriptions in which the 

 length of the longest hairs is given, the so-called "flowing mane," — which refers only 

 to the greater length of the hairs on the neck and shoulders as compared with the other 

 regions of the body, — does not appear to be any more truly a mane than in Lumetu- 



