ym of _peninsulae_ by recent authors. Howell (1929:58) noted that
the holotype was, "... a phenomenally large specimen such as is
encountered occasionally in almost all groups of rodents." He ascribed
the color differences noted by Miller to "seasonal" variation. The
holotype of _praetor_ is undeniably larger than the other adult
specimens listed in the original description. These paratypes and other
specimens of _praetor_ available to me are approximately the same size
externally and average only slightly larger cranially than specimens of
_peninsulae_ from central and southern Korea. However, the dorsal
coloration of _praetor_ is somewhat darker and duller than that of
_peninsulae_, especially in summer pelage when _praetor_ lacks the
conspicuous bright ochraceous tinge of the Korean specimens. In
addition, _praetor_ has broader zygomatic plates with correspondingly
deeper zygomatic notches and the color on the face of the upper incisors
averages much more orange than in _peninsulae_.

In the north then, wood mice range from Korea and Manchuria westward at
least as far as the Altai Mountains. For mice from the intervening
Siberian areas Russian workers have used the name _major_ which, as
noted above, is unavailable. The exact relationships of the mice of
these areas to previously named subspecies is unknown to me and I have
not seen specimens of "_Mus (Alsomys) major rufulus_" of Dukelsky, 1928,
the type locality of which is 75 versts (approximately 50 miles) SE
Vladivostok, Siberia. It appears to be of the same species as
_peninsulae_ and judging from the original description it closely
resembles _praetor_. Neither have I seen specimens of the Sakhalin
Island mouse, _giliacus_, which Ellerman (1949:32) regards as a
subspecies of _Apodemus sylvaticus_. I feel reasonably sure, however,
that it will prove to be a subspecies of _peninsulae_. In the original
description _giliacus_ was referred to as, "Most closely allied to the
Korean subspecies..." (Thomas, 1907:411).

In China the extent of the distribution of _Apodemus peninsulae_ is also
uncertain. Allen (1940:949-50) reported its occurrence from Jehol and
Hopeh in the northeast, southwestward through Shansi, Shensi and eastern
Kansu to Szechuan and northwestern Yunnan. Throughout most of this
region it occurs with another mouse, currently regarded as conspecific
with _Apodemus sylvaticus_, and the two kinds have been confused by some
previous authors. Howell (1929: