1915 BIRDS OF CALIFORNIA 139 
at Stockton, Murphys and Big Trees (Belding, Proc. U. S. Nat. Mus., 1, 1879, p. 
408) ; Lake Tahoe (Ray, Auk, xx, 1903, p. 190) ; Eagle Lake (Sheldon, Condor, 
Ix, 1907, p. 190) ; and in Tulare and Fresno counties (J. Grinnell, Condor, x1, 
1911, p. 111; Tyler, Condor, xi, 1911, p. 168). Occurs sparingly in winter in 
the Imperial Valley (Van Rossem, Condor, x1, 1911, p. 133). 
421 (614) Iridoprocne bicolor (Vieillot) 
TREE SWALLOW 
Synonyms—Tachycineta bicolor; Tachycineta bicolor vespertina; Irido- 
procne bicolor vespertina; Chelidon bicolor; Hirundo bicolor; Hirundo bicolor 
var. vespertina; Tachycineta thalassina, part; White-bellied Swallow. 
Status—Common migrant throughout the state; breeds commonly in the 
San Joaquin and Sacramento valleys, particularly in the vicinity of lakes and 
streams; also in similar locations in the coastal valleys south to San Onofre, San 
Diego County (J. S. Dixon, Condor, vi, 1906, p. 97); and in the vicinity of 
Lake Tahoe (Ray, Auk, xx1, 1905, p. 369) and Eagle Lake (Sheldon, Condor, 
1x, 1907, p. 190). Passes the winter irregularly and locally in the lowlands of 
southern and west-central California; northernmost occurrence in midwinter, 
Point Reyes Station, Marin County (Slevin, Bull. Cooper Orn. Club, 1, 1899, p. 
29: recorded under the name “‘thalassina’’). 
422 (615) Tachycineta thalassina lepida Mearns 
NorTHERN VIOLET-GREEN SWALLOW 
Synonyms—Tachycineta thalassina, part; Tachycineta lepida; Hirwndo 
thalassina. 
Status—Abundant migrant throughout the state, arriving early and tarry- 
ing long; passes the summer and breeds commonly in the Transition zone almost 
everywhere that zone extends, both in the Sierras and Coast Ranges, and from 
southern San Diego County northwards. Less common in the humid coast belt 
than on the interior mountains. Not recorded from any of the islands. Occurs 
in winter in the Imperial Valley (Van Rossem, Condor, xm, 1911, p. 133). 
423 (616) Riparia riparia (Linnaeus) 
Bank SWALLOW 
Synonyms—Clivicola riparia; Cotyle riparia. 
Status—Fairly common migrant throughout the state; remains through the 
summer and breeds in colonies at a few points: Alvord, Owens Valley (A. K. 
Fisher, N. Amer. Fauna no. 7, 1893, p. 112) ; Placerville (Emerson, Orn. & Ool., 
xu, 1888, p. 82) ; Paicines, San Benito County (J. and J. W. Mailliard, MS) ; 
seacoast in vicinity of Long Beach (J. Grinnell, Bds. Los Angeles Co., 1898, p. 
42), and Port Los Angeles (Shepardson, Condor, x1, 1909, p. 174) ; near Whit- 
tier, Los Angeles County (Willett, Pac. Coast Avif. no. 7, 1912, p. 91); and 
vicinity of Santa Cruz (Skirm, Orn. & Ool., 1x, 1884, p. 149). 
