_in_ Delta County.
(15) 8 mi. E, 2-1/2 mi. S Skyway, 9600 ft., _in_ Delta County.
(16) 1 mi. S, 4 mi. W Skyway, 10,200 ft., Mesa County.]

=_Sorex vagrans obscurus_= Merriam.--Fifteen specimens of the Vagrant
Shrew (59645-59655, 59665-59668) were trapped in Delta County from
localities 6, 10, 12, 13, and 14. The fourteen specimens having skulls
fell into two distinct age-classes based on wear of the teeth as
described by Findley (1955, Univ. Kansas Publ., Mus. Nat. Hist., 9:8);
5 were in the younger group and 9 in the older group. Weights in grams
of the younger shrews were 4.6, 5.5, 5.7, 5.8, and 6.4; weights of the
older shrews were 6.4, 6.8, 7.3, 7.4, 7.5, 8.0, 8.3, and 8.8. One of
the seven females was lactating; none contained embryos.

=_Sorex palustris navigator_= (Baird).--Six Water Shrews (59633-59638)
were trapped in Delta County at localities 10, 13, 14, and 15. The one
specimen from locality 10 was trapped on June 17; all others were taken
on June 21. None was pregnant or lactating. Two are young, weighing
11.0 and 12.9 grams; the other four are older, weighing 16.6, 17.0,
19.2, and 21.5 grams.

=_Myotis evotis evotis_= (H. Allen).--One female Long-eared Myotis
(59671), containing no embryos, was shot at dusk on July 2, at locality
3, which is below the rim of the Mesa.

=_Myotis volans interior_= Miller.--One female Long-legged Myotis
(70016), containing no embryos, was shot at locality 7 on July 1, 1956.

=_Ochotona princeps figginsi_= J. A. Allen.--Six specimens of the Pika
(59672-59675, 70018-70019) from localities 5, 6, 7, 8, and 9 extend the
known range of the subspecies approximately 55 miles to the westward
from Irwin in Gunnison County. Each of two females taken on June 18 and
26 contained three embryos, which measured 20 millimeters in the
latter; a third female on June 29 contained two embryos 35 millimeters
in length.

=_Lepus americanus bairdii_= Hayden.--No Snowshoe Rabbit was taken, but
one individual was observed by H. B. Tordoff on June 18, 1954, at
locality 8. Droppings of a large lagomorph were seen in the woods, and
tracks were seen in the snow.

=_Marmota flaviventris luteola_= A. H. Howell.--The seven specimens of
the Yellow-bellied Marmot (59731-6, 70022, four adult and two young,
each a skin and skull, and one skull only of an adult) are referable on
the basis of size, color, and locality as discussed by Warren (1936,
Jour. Mamm., 17:394) to _M. f. luteola_. The total lengths