180 NORTHERN ZOOLOGY. 
4. A. SPERMOPHILUS CITILLUS seu uNDULATUS (Zizel, Suset or Hungarian 
marmot). 
o. A, SPERMOPHILUS coNcoLorR (Jevraschka or Siberian marmot). 
The three last were described, by Pallas, as varieties of one species, which he 
named mus citillus. M. Lichtenstein has lately given the characters of the three 
following new ones, brought from Bucharia by M. Eversman :— 
6. A. ruLvus, resembling the bobac, but having only eleven inches length, 
exclusive of the tail, which is three inches and one-third long. Its fur is ofa 
shining, yellowish-brown colour, and is mixed with an ash-gray down. Its toes 
are slender, and much longer than those of the bobac, and its thumb-nail is 
peculiarly long. 
7. A. LEPTODACTYLUS is nine inches long, exclusive of the tail, which is two 
inches and three-quarters. It is remarkable for the length of its toes, which is so 
creat, that the distance from the heel to the root of the claw of the middle hind-toe 
is equal to one-fourth of the length of the body (whilst in the bobac and Siberian 
souslik, it does not exceed the eighth part). The sole is not naked, as in the other 
marmots, but is clothed, as well as the under surfaces of the toes, with the exception 
of the two middle ones, with close, coarse hairs. The thumb of the fore-feet is 
armed with a strong, obtuse nail, which curves inwards. The fur of the back is 
composed of long, crowded, silky hairs, of a gold-yellow colour, mixed with black 
down. ‘The belly is white ; the crown of the head is grayish-brown, which colour 
- forms sharp, angular projections towards the nose, and is intersected by a white 
stripe, occupying the space between the eye and the nose, and surmounted by a 
black streak reaching from the inner angle of the eye to the upper lip. The tail 
is coloured above like the back; beneath, it has a shining, black centre, with a 
white border. | 
8, A. muGosaricus, Is nearly nine inches long, with a tail a little exceeding an 
inch, and is without nails to the fore-feet. The soles of the hind-feet are broad 
and short, having only about one-tenth of the length of the body. In other 
respects it perfectly resembles the souslik. 
