I have watched these chipmunks eat the berries of the red huckleberry (_Vaccinium parvifolium_), salmonberry (_Rubus spectabilis_), thimbleberry (_Rubus parviflorus_), devil's club (_Fatsia horrida_), and mountain ash (_Sorbus cascadensis_ and _S. occidentalis_). Of these, the blue huckleberry (_Vaccinum occidentale_ and _V. membranaceum_) are probably the most important to the chipmunks. At Sherman Creek Pass, in the Kettle River Mountains, Ferry County, I watched a pika (_Ochotona_) busily harvesting wild raspberry plants (_Rubus leucodermis_), and laying them in a pile under a rock. A yellow-pine chipmunk waited under the rock and ate the ripe berries from each branch as it was laid away. A brood nest of the yellow-pine chipmunk was discovered by Shaw (1944: 274) at Hurricane Ridge, Clallam County. The entrance was a hole 1-1/2 inches in diameter constructed among the grass and alpine flowers of a meadow at 6,450 feet elevation. The burrow itself was 2 inches in diameter, and had a turning-around pocket 9 inches from the entrance. The nest was situated just beneath the sod, 4 feet from the entrance. The nest chamber was 7 inches high by 7-1/2 inches in diameter and in the shape of a "round-bottomed flask." It was filled snugly with nest material composed of a grasslike sedge (_Carex spectabilis_) mixed with feathers of the blue grouse. Earth excavated from the nest cavity had been forced upwards through the sod in the manner of a mole in forming mounds. The single burrow was unbranched. Seven young of about 16 to 18 days of age were found in the nest. =Tamias amoenus caurinus= (Merriam) _Eutamias caurinus_ Merriam, Proc. Acad. Nat. Sci. Philadelphia, p. 352, October 4, 1898. _Eutamias amoenus caurinus_ Howell, Jour. Mamm., 3:184, August 4, 1922. _Tamias amoenus caurinus_ Ellerman, Fam. and Genera of Living Rodents, British Mus. Nat. Hist., p. 432, June 8, 1940. _Type._--Obtained at timber-line, head of Sol Duc River, Olympic Mountains, Clallam County, Washington, by C. H. Merriam and Vernon Bailey on August 27, 1897; type in United States National Museum. _Racial characters._--Small size and pale color. _Measurements._--Seven males and 3 females from Deer Park, Clallam County, average: total length 207.4; length of tail 93.2; hind foot 32.5; ear 16. _Distribution._--Higher parts of the Olympic Mountains, from Deer Park (W. W. D.) south to head of Dosewallips River (Howell, 1929:77). =Tamias amoenus felix= Rhoads _Tamias quadrivittatus felix_ Rhoads, Amer. Nat., 29:941, October, 1895. _Eutamias quadrivittatus felix_ Miller and Rehn, Proc. Boston Soc. Nat. Hist., 30:44, December 27, 1901. _Eutamias amoenus felix_ Howell, Jour. Mamm., 3:184, August 4, 1922. _Tamias amoenus felix_ Ellerman, Fam. and Genera of Living Rodents, British Mus. Nat. Hist., p. 432, June 8, 1940.