506 MURIDAZ—APODEMUS 
A. agrarius, Pallas (Vov. Sp. Quad. e Gihir., 1778, 95; described 
from Berlin), the “ Brandmaus,” is a species with a very wide range, 
extending from Denmark and Germany across Eurasia to the coast of 
China and Korea; it is also known to inhabit some of the Asiatic 
coastal islands, such as Quelpart, but it does not reach Japan; its 
absence from Britain, Skandinavia, and Iberia is noteworthy. In its 
typical form this species is characterised by the ochraceous colour of the 
upper parts, and the middle of the back is clothed with black hairs which 
form a sharply defined dorsal streak. The tail, ears, and feet are relatively 
short, and the general form is stouter than in the sy/vaticus group; 
there are eight mammz. The skull has supra-orbital beads as in A. 
spectosus. The cheek-teeth (Pl. XXVIII., Fig. 6) are more highly special- 
ised than are those of other species of Apodemus : the median tubercles of 
the upper teeth are much enlarged at the expense of the outer and inner 
rows; cusp I is much reduced in mz! and has vanished from mm”; cusp 7 
is reduced in 7°, This group has not improbably originated in the East, 
and it may well be the result of a specialisation of the same stock as 
that from which A. speczosus has descended. In this connection it may 
be noted that in A. chevrter7, Milne-Edwardes (Rech. Mamm., 1868, 288 ; 
described from eastern Thibet), a close ally of A. agrarius, the fur 
develops spines in the summer and there is no trace of dorsal darken- 
ing. In the Chinese A. a. ningpoensis, Swinhoe (Proc. Zool. Soc., 1870, 
637), there is little trace of the dorsal streak, while in A. a. coree@, Thomas 
(Proc. Zool. Soc. 1908, 8; described from Korea and Quelpart Island), 
it is subject to great variation, and the summer coat is spiny. Other 
far-eastern sub-species, A. a. mantchuricus, Thomas (Proc. Zool. Soc., 
1898, 774), and A. a. pallidior, Thomas (Proc. Zool. Soc., 1908, 8; 
described from the Shantung Peninsula), resemble the European 4d. 
agrarius in these respects. 
THE FIELD MOUSE? 
APODEMUS SYILVATICUS (Linnzus). 
APODEMUS SYLVATICUS SYLVATICUS (Linnzus). 
1758. [Mus] SYLVATICUS, Carolus Linnzeus, Systema Nature, toth ed., 62 ; described 
from Upsala, Sweden ; Fleming ; Jenyns; Bell (ed. 1 and 2); Turton and practi- 
cally all authors, except as given below. 
1839. MUS INTERMEDIUS, J. C. Bellamy, Natural History of South Devon, 195 and 
329, and figure ; described from Whiteford stables, Devonport, Devonshire. 
1900. MUS SYLVATICUS INTERMEDIUS, G. E. H, Barrett-Hamilton, Proc. Zool. Soc., 
London, 398; Johnston; Millais ; Trouessart. 

1 Long-tailed Field Mouse or Wood Mouse of some authors. 
