-----------------+----+----+----+---+---+---+---+---+---+----
Cherry County, Nebraska

Av. 20 (14 male, 6 female)|21.0|10.9|10.3|3.1|7.9|7.3|3.8|4.4|3.6|3.5
Minimum |20.4|10.0| 9.8|2.9|7.5|6.8|3.5|4.3|3.4|3.2
Maximum |22.1|11.3|10.7|3.3|8.4|7.8|4.1|4.7|3.9|3.7
--------------------------+----+----+----+---+---+---+---+---+---+----
_R. m. aztecus_, San Juan County, New Mexico, and Montezuma County,
Colorado

Av. 10 (6 male, 4 female) |21.5|10.8|10.2|3.1|8.1|7.7|3.7|4.5|3.4|3.5
Minimum |20.5|10.4| 9.9|2.9|7.9|7.2|3.5|3.9|3.1|3.2
Maximum |22.7|11.1|10.6|3.3|8.4|8.2|3.9|4.8|3.7|3.7
--------------------------+----+----+----+---+---+---+---+---+---+----

LITERATURE CITED

ALLEN, J. A.

1893. List of mammals collected by Mr. Charles P. Rowley in the San
Juan region of Colorado, New Mexico and Utah, with
descriptions of new species. Bull. Amer. Mus. Nat. Hist,
5:69-84, April 28.

1895. On the species of the genus Reithrodontomys. Bull. Amer. Mus.
Nat. Hist, 7:107-143, May 21.

BENSON, S. B.

1935. The status of Reithrodontomys montanus (Baird). Jour. Mamm.,
16:139-142, 1 fig., May 15.

BLAIR, W. F.

1954. Mammals of the Mesquite Plains Biotic District in Texas and
Oklahoma, and speciation in the central grasslands. Texas
Jour. Sci., 6:235-264, 1 fig., September.

DALQUEST, W. W.

1948. Mammals of Washington. Univ. Kansas Publ., Mus. Nat. Hist.,
2:1-444, 140 figs., April 9.

HALL, E. R., and K. R. KELSON

1959. The mammals of North America. Ronald Press, New York, vols.
1:xxx + 1-546 + 79 and 2:viii + 547-1083 + 79, 553 figs., 500
maps, 178 unnumbered text figs., March 31.

HILL, J. E., and C. W. HIBBARD

1943. Ecological differences between two harvest mice
(_Reithrodontomys_) in western Kansas. Jour. Mamm., 24:22-25,
February 20.

HOFFMEISTER, D. F., and J. E. WARNOCK

1955. The harvest mouse (Reithrodontomys megalotis) in Illinois and
its taxonomic status. Trans. Illinois Acad. Sci., 47:161-164,
1 fig.

HOOPER, E. T.

1952. A systematic review of the harvest mice (genus
Reithrodontomys) of Latin America. Misc. Publ. Mus. Zool.,
Univ. Michigan, 77: 1-255, 9 pls., 24 figs., 12 maps, January
16.

HOWELL, A. H.

1