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1924] Swarth: Birds and Mammals of the Skeena River Region 387

1917. The subspecies of Hesperiphona vespertina. Condor, 19, 17-22, text
figs.
1918. The subspecies of the mountain chickadee. Univ. Calif. Publ. Zool.
17, 505-515, 3 figs. in text.
1923. The status of the Rocky Mountain downy woodpecker in California.
Condor, 25, 30-31.
HOLLISTER, N.
1911. A systematic synopsis of the muskrats. U.S. Dept. Agr., Biol. Surv.,
N. Am. Fauna, 32, 47 pp., 6 pls.
1912a. New mammals from Canada, Alaska, and Kamchatka. Smithson.
Mise. Coll., 56, no. 35, 8 pp., 3 pls.
1912b. Mammals of the Alpine Club expedition to the Mount Robson region.
Canadian Alpine Journal, special number, pp. 1-44, pls. 1-12.
HoweELL, A. H.
1915. Revision of the American marmots. U.S. Dept. Agr., Biol. Surv.,
N. Am. Fauna, 37, 89 pp., 15 pls., 3 figs. in text.
MEINERTZHAGEN, R.
1921. Some preliminary remarks on the velocity of migratory flight among
birds, with special reference to the Palaearctic Region. Ibis, April,
pp. 228-238.
MerRIAM, C. H.
1896. Synopsis of the weasels of North America. U.S. Dept. Agr., Div.
Ornith. and Mam., N. Am. Fauna, 11, 44 pp., 5 pls., 16 figs. in text.

NELSON, E. W.
1909. The rabbits of North America. U.S. Dept. Agr., Biol. Surv., N. Am.
Fauna, 29, 314 pp., 13 pls., 19 figs. in text.

OBERHOLSER, H. C.

1904. A revision of the American great horned owls. Proc. U.S. Nat. Mus.,
27, 177-192.

1907. A New Agelaius from Canada. Auk, 24, 332-336.

OGILViE-—GRANT, W. R.
1893. Catalogue of the game birds (Pterocletes, Gallinae, Opisthocomi,
Hemipodii) in the collection of the British Museum. Catalogue of
Birds, 23, xvi + 585 pp., 8 pls., text figs.
Oscoon, W. H.
1909. Revision of the mice of the American genus Peromyscus. U.S. Dept.
Agr., Biol. Surv., N. Am. Fauna, 28, 285 pp., 8 pls., 12 figs. in text.

REICHENOW, A.
1908. Neue Vogelarten. Ornith. Monatsber., 16, 191.

Rxoaps, 8. N.
1893. Notes on certain Washington and British Columbia birds. Auk, 10,
16-24.
Ripeway, R.
1904. The birds of North and Middle America. U.S. Nat. Mus. Bull., 50,
pt. ITI, xx + 801 pp., 19 pls.
1914. Idem, pt. VI, xx + 882 pp., 36 pls.
RILEY, J. H.
1911. Descriptions of three new birds from Canada. Proce. Biol. Soc. Wash.,
24, 233-236.