ARVICOLIN&. 347 
No. 384. Mus CoNFUCIANUS. 
HapBiTat.—Moupin ; Thibet. 
DESCRIPTION.—F awn brown above, pure white below; lower part of 
cheek white ; on the back the fur is interspersed with longer hairs of a 
blackish tint ; feet pale. 
S1zE.—Head and body, about 4 inches.—‘ Mammiferes,’ p. 286. 
No. 885. Mus CHEVRIERI. 
Hapitat.—Moupin ; Thibet. 
DeEscrIPTION.—General colour tawny brown, grizzled with dark brown; 
lower parts of a clear grey, almost white; ears short; feet small; tail 
covered with short hair. 
S1zE.—A bout 4% inches ; tail about 33} inches.—‘ Mammiferes,’ p. 288. 
No. 386. Mus PYGMAUS. 
The Pigmy Mouse. 
Hapitat.—Moupin; Thibet. 
DESCRIPTION.—Distinguished by its very short ears and the square 
form of its head ; deep brown above ; greyish-yellow beneath ; tail shorter 
than in the common mouse. 
S1zE.—About 2? inches ; tail, about 2 inches.—‘ Mammiftres,’ p. 291. 
ARVICOLIN/. 
In this sub-family the molars are generally semi-rooted or rootless. 
The Arvicoline or Voles consist of the American Musquash (fider zi- 
bethicus), a very beaver-like water rat of large size; the Lemmings 
(Myodes), of which there are several species which are celebrated for 
their vast migrations; and the true Vole (Arvicola), which is the only 
genus found in India, and then only in the colder climate of the Hima- 
layas. ‘There are several species in Europe, of which three are found in 
England. According to Professor Dallas, the true Voles number about 
fifty species, arranged by various writers under a considerable number 
of sub-genera. In India we have only eight known species, and two 
more from the adjacent country of Thibet. 
The European forms of 4rvicole have been divided by Blasius into 
four sub-genera of two divisions—the first division having rooted molars 
in the adult animal—containing one sub-genus only, Hypudeus of Illiger ; 
