1915 BIRDS OF CALIFORNIA 169 
ert; northwest through the Salton Sea district to Palm Springs (many records), 
west to San Felipe Canyon, eastern San Diego County (Mus. Vert. Zool.), and 
north along the valley of the Colorado River to Needles (Mus. Vert. Zool.). Also 
Yermo, Mohave Desert (Lamb, Condor, xtv, 1912, p. 40), Goffs, eastern San 
Bernardino County (Hollister, Auk, xxv, 1908, p. 462), and Resting Springs, 
Amargosa River, Inyo County (A. K. Fisher, N. Amer. Fauna no. 7, 1893, p. 
144). 
529 (753) Polioptila californica Brewster 
BLACK-TAILED GNATCATCHER 
Synonyms—Polioptila melanura, part; Culicivora atricapilla; Black-tailed 
Flycatcher. 
Status—Common resident locally of the Lower Sonoran zone in the San 
Diegan district, from the Mexican line northwest to the lower Santa Clara Valley 
in southern Ventura County (Evermann, Auk, 1m, 1886, p. 186) and even to 
Ventura (Mus. Vert. Zool.). Occurs only west of the desert divide, except at 
San Gorgonio Pass through which the range of the species extends casually in 
winter desertwards as far as Palm Springs (J. Grinnell, Condor, vi, 1904, p. 45). 
530 (754) Myadestes townsendi (Audubon) 
TOWNSEND SOLITAIRE 
Synonyms—Ptilogonys townsendi; Townsend Flycatcher. 
Status—Common resident of high Transition and Canadian zones on the 
Warner Mountains, Modoc County (Mus. Vert. Zool.), and on the Sierra Nevada 
from Mount Shasta south to Sirretta Meadows, Tulare County (Mus. Vert. 
Zool.) ; also in southern California, on the San Bernardino Mountains (J. Grin- 
nell, Univ. Calif. Publ. Zool., v, 1908, p. 128). Occurs in summer also on the 
Trinity Mountains, Trinity and Siskiyou counties (Mus. Vert Zool.), and on 
South Yolla Bolly Mountain (Mus. Vert. Zool.), but not known to breed in the 
humid coast belt proper. Winters chiefly within the Transition zone, though oc- 
curs at times in numbers in the adjacent valleys of both the desert and Pacific 
slopes. Found in late spring on certain desert ranges southeast of Mount Whit- 
ney (A. K. Fisher, N. Amer. Fauna no. 7, 1893, p. 144). Recorded west in 
mid-winter sparingly to the coast region, in southern and central California; for 
instance, at San Diego (Belding, Land Bds. Pac. Dist., 1890, p. 250), Los Gatos 
(Van Denburgh, Proc. Amer. Philos. Soc., xxxvit, 1899, p. 179), Monterey (J. 
and J. W. Mailliard, MS), San Geronimo (J. Mailliard, Auk, xv, 1898, p. 197), 
and Berkeley (J. Grinnell, Condor, xv1, 1914, p. 40) ; numerous in February at 
Tower House, Shasta County (l. Kellogg, Condor, xm, 1911, p. 121). 
531 (758) Hylocichla ustulata ustulata (Nuttall) 
RUSSET-BACKED THRUSH 
Synonyms—Turdus ustulatus; Turdus ustulatus swainsoni, part; Turdus 
nanus, part; Turdus swainsoni; Turdus swainsoni ustulatus; Hylocichla ustu- 
lata oedica; Oregon Thrush; Olive Thrush, part. 
