374 



DOUGLA.SS' SPERMOPHILE. 



slightly hooked. The feet are covered with short adpressed hairs, to the 

 roots of the nails ; the tail is long and cylindrical, the longest hairs two 

 inches in length. Mammae ten, four pectoral and six abdominal. 



Incisors, dark orange ; moustaches, black ; on the nose and forehead, 

 a tinge of reddish-brown ; around the eyes, white ; inner surface of ear, 

 dull yellowish-brown ; outer surface, dark-brown becoming nearly 

 black at the tips ; sides of the face, yellowish white. The sides of the 

 neck and shoulders have a hoary appearance. There is a broad, dark- 

 brown stripe commencing on the neck, widening in its descent, and con- 

 tinuing along the centre of the back for about half the length of the 

 body, when it gradually blends with the colours on the sides and hips, 

 which are irregularly speckled with white and black on a yellowish- 

 brown ground. Nails, black ; inner surface of legs, and whole un- 

 der surface of body, dull yellowish-white. All the feet are grayish- 

 brown. 



The under-fur on every part of the back is dark-brown ; the longer 

 hairs are brown at their roots, then yellowish ; those on the dorsal line 

 are broadly tipped with black, whilst on the shoulders the tips are 

 white. The spots on the back and hips are formed by some of the hairs 

 being tipped with white, others with black. The hairs on the tail are at 

 their roots white, then three times annulated with black and white, 

 and are tipped with white ; thus when distichously arranged (which, 

 however, does not seem natural to the animal,) the tail presents three 

 narrow longitudinal black stripes, and four white ones. Under-surface 

 of tail, dull yellowish-gray. 



There are some variations in the colour of different specimens. An 

 old female that was suckling her young at the time she was caught had 

 the dark dorsal line on the shoulders very indistinctly visible, and her 

 feet were much lighter coloured than in younger specimens. 



DIMENSIONS. 



An old female. 



Length of head and body 



Tail (vertebrae) 



Tail, to end of fur . 



Height of ear . 



From heel to longest nail 



From eye to point of nose 



m 



inches 



7^ 



do. 



9 



do. 



i 



do. 



2i 



do. 



14 



do. 



