_Microtus mexicanus fundatus_ Hall, Univ. Kansas Publ., Mus.
Nat. Hist., 1:425, December 24, 1948, type from 3-1/2 mi. S.
PAitzcuaro, 7,900 ft., MichoacAin.
_Range._--Central part of state.
_Specimens examined_, 59: nos. 100636-100694, distributed, with
reference to the town of PAitzcuaro, as follows: 3-1/2 mi. S, 7,900 ft.,
9; 4 mi. S, 7,800 ft., 16; 5 mi. S, 7,800 ft., 26; 9 mi. SE, 8,000 ft., 8.
_Remarks._--Of the 23 females, only one was pregnant. It had two
embryos. Average and extreme weights of ten adults of each sex, are:
males, 37.8 (31.5-48.2); females, 38.0 (31.0-48.6) grams. Our
specimens were trapped in well-defined runways beneath a rail fence
where there was a growth of grass sufficient to make a cover for the
runways. Bailey (1900:54-55) has recorded under the name _Microtus
mexicanus phaeus_ specimens from Nahuatzin which may be referable to
the subspecies _M. m. fundatus_.
=Mus musculus= subsp.?