80 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



California). — Grinnell and Storer, Animal Life in Yosemite, 1924, 272 (descr. ; 

 distr.; habits; Yosemite) —BIichards, Condor, xxvi, 1924, 99 (Grass Valley 

 district, California).— Michael, Condor, xxvii, 1925, 110 ( Yosemite) .—Mail- 

 LiARD, Proc. California Acad. Sci., ser. 4, xvi, No. 10, 1927, 295 (Modoc County, 

 Calif.). — Grinnell, Dixon, and Linsdale, Univ. of California Publ. Zool., 

 XXXV, 1930, 200 (distr.; Lassen Peak region, n. California).— Gabrielson, Con- 

 dor, xxxiii, 1931, 112 (Grants Pass, Winona, Evans Creek, and Gold Hill, 

 Oreg.).— Peters, Check-list Birds of World, ii, 1934, 29 (range). 



Dendragapus fuliginosiis sierrae SvifARXH, Univ. California Publ. Zool,, xxx, 1926, 

 82 in text (figs, of tail feathers), 84 in text.— Brooks, Auk, xlvi, 1929, 113 

 (rev.; crit.). — ^American Ornithologists' Union, Check-list, ed. 4, 1931, 79 

 (range).- Bent, U. S. Nat. Mus. Bull. 162, 1932, 114 (habits, etc.).— DeGroot, 

 Condor, xxxvi, 1934, 6 (abundant at Echo Lake, Calif.).— Linsdale, Pacific 

 Coast Avif., No. 23, 1936, 47 (w. Nevada; resident in Sierra Nevada and White 

 Mountains).— Moffitt, Auk, Iv, 1938, 589, pi. 19, fig. 4 (downy young; col. 

 fig.; descr.). — Gabrielson and Jewett, Birds Oregon, 1940, 212 (Oregon; 

 descr.; distr.; habits). — Hellmayr and Conover, Cat. Birds Amer., i, No. 1, 

 1942, 200 (syn.; distr.) .—Dixon, Condor, xlv, 1943, 208 (Kings Canyon Na- 

 tional Park, Calif.). 



U[endragaptis] f[uliginosus] sierrae Swarth, Univ. California Publ. Zool., xxx, 

 1926, 74 in text (map; distr.). 



Canace richardsoni Bendire, Proc. Boston Soc. Nat. Hist., xviii, 1875, 163 (Camp 

 Harney, Oreg.). 



Tetrao California (not Shaw and Nodder) May, California Game "Marked Down" 

 (Southern Pacific Co.), 1896, 41, fig. (Lake Tahoe region on the Sierra Nevada, 

 El Dorado County, Calif.). — Grinnell, Univ. California Publ. Zool., xxxviii, 

 1932, 268 (type loc; crit.). 



DENDRAGAPUS OBSCURUS HOWARDI Dickey and Van Rossem 



Mount Pings Dusky Grouse 



Adult male. — Very similar to that of Dendragapus ohscurus sierrae but 

 with the vermiculations on the feathers of the upperparts heavier and 

 more conspicuous, the ground color of these feathers very slightly paler, 

 more grayish, than in sierrae; tail decidedly longer and much more gradu- 

 ated, with the gray terminal band averaging broader. 



Adult feifiale. — Similar to that of D. o. sierrae but with the tail longer 

 and more graduated and with the gray terminal band averaging broader. 



Immature. — None seen, but undoubtedly the immature birds of either 

 sex differ from their respective adult plumages in having narrower rec- 

 trices and usually some juvenal feathers on the head and inner part of 

 the wing. 



Juvenal (sexes alike). — Very close to that of sierrae from which it 

 cannot be separated with certainty but apparently averaging slightly more 

 sandy in general color above. 



Downy young (sexes alike). — Like that of D. o. sierrae but slightly 

 paler, sandier above and on the wings.®^ 



" None seen ; description based on Moffitt's plate. Auk, Iv, 1938, pi. 18, fig. 3. 



