32 CLASS MAMMALIA. 



of the animal is derived. The rest of the body and limbs 

 are of a dirty white, with the exception of the belly, which 

 presents a few reddish tints. The tail is covered with hairs 

 similar to those of the back for about two inches and a 

 half, while its extremity is scaly, and partly brown and 

 partly white. There are six or seven teats in the pouch of 

 the female, which sex, by the way, are of a more reddish 

 colour than the males. 



This species is one of those most anciently known, and 

 its habits are precisely similar to those of the foregoing. 

 Its habitat is Cayenne, and doubtless many other of the 

 warmer climates of South America. 



The Cayopollin, or Mexican Opossum, is about eight 

 inches long, and the tail is about a foot. The muzzle is 

 inclining to be thick, and the ears are rather large. The 

 eyes are slightly bordered with blackish. It is marked in 

 the frontal ridge with a longitudinal line of brown, grayish 

 on the edges. All the upper and external parts are of a 

 fawn colour and gray intermingled, the summit of the 

 hairs being of the former, and the rest of them of the 

 latter colour. The fawn colour predominates on the occi- 

 put and the neck. The rest of the animal is of a very 

 pale and almost whitish yellow. The ears are naked at 

 their internal face. The tail is covered with hairs for 

 something more than an inch from its origin, and the rest 

 with scales, intermingled with some brush hairs. Part of 

 the tail is variegated with brown and yellow, the point 

 being of this last colour. 



The Marmose, or more properly Marmot Did. Muneird), 

 the Marine Opossum of Pennant and Shaw, is pretty si- 

 milar in its general forms to the Cayopollin. It is be- 

 tween seven and eight inches long, and the tail about the 

 same. The muzzle is more pointed than in the Cayopol- 

 lin, the ears more rounded, and the head more convex. 

 The eyes are situated in the middle of a blackish band, 



