_Specimens examined._--Total number, 45. MONTANA: _Hill Co._: Bearpaw Mts., 5 UM, 2 BS. _Phillips Co._: Zortman, 1 BS. _Chouteau Co._: type locality, 3 UM; Highwood Mts., 13 BS. _Cascade Co._: Neihart, Little Belt Mts., 1 BS. _Judith Basin Co._: 3 mi. W Geyser, 4100 ft., 1 KU; Otter Creek, 10 mi. SW Geyser, 1 BS; Dry Wolf Creek, 20 mi. SW Stanford, 1 BS. Buffalo, 13 mi. W Buffalo Canyon, 2 BS. _Fergus Co._: Moccasin Mts., 15 mi. NW Hilger, 3 BS; Judith Mts., 17 mi. NE Lewiston, 1 BS; 15 mi. S Heath, N. fork Flat Willow Creek, Big Snowy Mts., 1 BS; Timber Creek, Big Snowy Mts., 1 BS; Crystal Lake, 6000 ft., Big Snowy Mts., 2 UM; Rocky Creek, 5600 ft., Big Snowy Mts., 3 UM; Big Snowy Mts., 3 BS. _Meagher Co._: Sheep Creek, 16 mi. N White Sulphur Springs, Little Belt Mts., 1 BS.
_Marginal records._--MONTANA: Bearpaw Mts.; Zortman; Big Snowy Mts.; 16 mi. N White Sulphur Springs; Highwood Mts.
_Sorex obscurus neomexicanus_ Bailey, Proc. Biol. Soc. Washington, 26:133, May 21, 1913.
_Type._--Adult male, skin and skull; No. 100440, U. S. Biol. Surv. Coll.; obtained on May 29, 1900, by Vernon Bailey, from Cloudcroft, 9000 ft., Otero Co., New Mexico.
_Range._--Sacramento and Capitan Mountains of New Mexico.
_Diagnosis._--Size medium for the species; average and extreme measurements of 4 topotypes are: total length, 105.2 (103-107); tail, 41.0 (39-42); hind foot, 13.1 (12.5-14). Color near Olive Brown in summer; winter pelage unknown; skull large and relatively broad; teeth relatively large.
_Comparisons._--Skull larger than that of _S. v. obscurus_ and relatively somewhat broader; much larger in all cranial dimensions than _S. v. monticola_.
_Remarks._--_S. v. neomexicanus_ is a well-marked subspecies seemingly limited to the mountains of southeastern New Mexico. It is the only species of _Sorex_ thus far recorded from that area.
_Specimens examined._--Total number, 12. NEW MEXICO: _Otero Co._: SW slope Capitan Mts., 2 BS; 10 mi. NE Cloudcroft, 2 BS; Cloudcroft, 7 BS, 1 UM.
_Marginal records._--NEW MEXICO: SW slope Capitan Mts.; 10 mi. NE Cloudcroft; type locality.
_Sorex monticolus_ Merriam, N. Amer. Fauna, 3:43, September 11, 1890.
_Sorex vagrans monticola_, Merriam, N. Amer. Fauna, 10:69, December 31, 1895.
