4. A. s p e r m o p h i l u s c i t i l l u s seu u n d u l a t u s (Zisel, Suset or Hungarian
marmot).
5. A. s p e r m o p h i l u s c o n c o l o r (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. f u l v u s , resembling the bobac, but having only eleven inches length,
exclusive of the tail, which is three inches and one-third long. Its fur is of a
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. l e p t o d a c t y l u s 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
great, 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. m u g o s a r ic u s , 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.