intensive collecting, none has been obtained from these areas.

Phenacomys intermedius intermedius Merriam. Heather Vole.—The heather vole, while not rare, is uncommon in Utah. Durrant (1952:360) had but eight specimens from various localities in Summit, Wasatch, Salt Lake and Utah counties and supposed that the species was restricted to the western Uinta Mountains and southern Wasatch Mountains. In the summers of 1952 and 1953, intensive collecting of mammals was carried out on Boulder Mountain and the Aquarius Plateau, in Wayne and Garfield counties. Two specimens, nos. 8956 and 9074, were obtained from Spectacle Lake, Boulder Mountain, Garfield County. These specimens extend the known area of occurrence 175 miles southward in Utah. No specimens are known from the areas between Mount Timpanogos in Utah County, and Boulder Mountain in Garfield County. We suspect, however, that when this intervening area has been thoroughly studied, the heather vole, like many other montane mammals, will be found throughout the entire length of the central mountain ranges.

Microtus pennsylvanicus modestus (Baird). Pennsylvanian Meadow Mouse.—In Utah this mouse was known only from wet meadows in valleys immediately west of the Wasatch Mountains, as far south as a place 2 miles south of Provo (Hall and Cockrum, 1953:410). Norman V. Chamberlain collected several specimens "near" Koosharem Reservoir, Sevier County. These extend the known range of this subspecies 110 miles southward, and suggest that Pennsylvanian meadow mice occur, in suitable habitat, all along the eastern margin of the Great Basin in Utah, at least as far south as Sevier County. All northern specimens are from the drainages of Utah Lake and Great Salt Lake, but these specimens from Sevier County are from the Sevier River Drainage. This species requires a fairly moist environment, and such habitat exists between the aforementioned drainages which are practically interconnected by Mona Reservoir and its adjacent areas of springs.

Zapus princeps utahensis Hall. Big Jumping Mouse.—Durrant (1952:388) reported a specimen from Puffer Lake, Beaver Mountains, Beaver County. He supposed that this mouse occurred also at high elevations still farther south in Utah. Subsequently, two specimens were obtained from Garfield County; No. 9006 from Steep Creek, 12 miles north of Boulder and No. 9071 from East Fork of Boulder Creek, 10 miles north of Boulder. These two specimens extend the known range of jumping mice in Utah 75 miles southeastward. Several specimens have been obtained also from the Fishlake Plateau, and further bear out Durrant's supposition that these mammals occur on all of the high mountains of central Utah, at least as far south as the Aquarius Plateau.

Urocyon cinereoargenteus scottii Mearns. Gray Fox.—One skull, No. 10,240, from mouth of Birch Creek, Deep Creek Mountains, Juab County, extends the known geographic range 50 miles east from Cherry Creek Canyon, Nevada (see Hall, 1946:241). This record indicates that the species occurs in the mountainous areas on the western margins of Pleistocene Lake Bonneville, and extends the known range in Utah approximately 150 miles northward. Furthermore, this record proves that the gray fox occurs as far north in western Utah as it does in eastern Nevada, but to date none has been obtained from the mountains within the basin of the ancient lake, even though some of them are not far removed from the Deep Creek Mountains.

Lutra canadensis nexa Goldman. River Otter.—River otters are rare in a semi-arid state like Utah, and few have been preserved as scientific specimens. Durrant (1952:436) had access to but one skull from an immature animal from the Raft River Mountain area in northwestern Boxelder County. At present there are two complete specimens (skins, skulls and skeletons) in the collection of the University of Utah. They were trapped by