EXTERNAL CHARACTERS. 277 



extreme posterior part of the body, but varying greatly in differ- 

 ent individuals and at different seasons. Whiskers whitish or 

 yellowish-white, a few of them usually dusky at base. Length 

 of adult male 7 to 8 feet 5 of adult female about 5.75 feet. 

 Pelage short, harsh, and stiff. 



A series of a dozen specimens varies greatly in color from 

 yellow through various shades of brownish-yellow to dark red- 

 dish-brown and even blackish-brown. At the season of moult 

 they change from reddish-brown to yellowish or golden-brown. 

 An adult female (M. C. Z. Coll., No. 5787) taken about Septem- 

 ber 1, 1877, is golden brownish-yellow, passing into dark brown 

 on the limbs and ventral surface. Top of the nose, between 

 and around the eyes, anterior edge of hand, and outer edge of 

 foot, pale yellowish-white. Said by the collector (Mr. Paul 

 Schumacher) to have just shed its coat. A nearly adult male 

 (M. C. Z. Coll., "No. 5785), taken at the same date, is dull dark 

 yellowish-brown, passing into blackish-brown on the limbs and 

 ventral surface $ around base of hind limbs and tail and behind 

 the axilla nearly black. A third (M. C. Z. Coll., No. 5788) is 

 dingy yellowish-brown, lighter on top of head, hind neck, and 

 over the shoulders, and darker posteriorly, beneath, and on the 

 limbs, where the color becomes very dark chestnut-brown, and 

 blackish around the eyes and nostrils. A fourth, a very old male 

 (M. C. Z. Coll., No. 5786), is dark yellowish-brown above, varied 

 with dusky, and with small dots and narrow streaks of white, 

 the white streaks and spots indicating the position of wounds 

 received in fighting. A large whitish spot on the back of the 

 neck.* Lower surface pale yellowish posteriorly, passing into 

 darker anteriorly. A sixth (M. C. Z. Coll., No. 5677), an adult 

 female, has the body everywhere dark yellowish -brown, passing 

 into darker on the limbs and ventral surface. Still another 

 ^M. C. Z. Coll., No. 5785), a nearly full-grown male, differs from 

 the foregoing in being light yellowish on the chin and about 

 the mouth, very dark or blackish on the throat and sides of 

 neck ; breast yellowish- white ; sides of body and ventral sur- 

 face very pale yellowish-white, as is also the central portion of 

 upper surface of both fore and hind limbs ; top of head and 

 greater part of dorsal surface very dark brown or blackish, 

 slightly varied with white ; shoulders and breast washed with 

 gray ; edges of the flippers very dark brown. 



* In this specimen the atlas is firmly anchylosed with the skull, the result, 

 doubtless, of injury in early life, to which, perhaps, this whitish spot is due. 



