DESCRIPTION OF GULO LUSCUS. 



37 



of light color, as in Mnstela. The legs, feet, most of the tail, 

 and under parts generally, are quite blackish. The claws are 

 whitish, strong, sharp, much curved, and about an inch long. 



*' The color of the fur varies much according to the season 

 and age. The younger animals are invariably darker in the 

 shadings than the old, which exhibit more of the grey mark- 

 lugs. ... In some specimens the yellowish fringing of the 

 sides and rump is almost entirely white and of larger extent, 

 leaving but a narrow stripe on the centre of the back dark. In 

 such the hoary markings of the head would be of greater extent, 

 and descend, most probably, to the shoulders."— (Ross, I. c.) 



Measurements of seven sjjecimens of Gulo luscus. 



From Ross. Longest hairs of body 4.00; of tail 7.50; upper canines 0.90; lower 0.75. 

 tFrom Baird. 



Anal glands. 



The anal glands of this animal are stated to be of about the size 

 of a walnut; the fluid yellowish-brown and of the consistency 

 of honey. The discharge is by the usual lateral papillae within 

 the verge of the anus. The scent is foetid in a high degree. 



I) €scri})tion of the sliull and teeth. (See Plate I.) 



The massiveness of the skull of GulOj in comparison with that 

 of Mustela, is as striking as its superiority in size. In general 

 form, the prominent peculiarity is the strong convexity of the 

 upper outline in profile. From the highest point, just behind 

 the orbits, the skull slopes rapidly downward behind; and the 

 frontal declivity is also much greater than in Mustela. There 



