36 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



(11.4); width of bill at frontal antije, 8-9 (8.7); tarsus, 14-16.5 (15.3); 

 middle toe, 15-17 (16.5).« 



Pacific coast district, from Cape St. Lucas (where resident) to British 

 Columbia (Vancouver Island, etc.); eastern Nicaragua (Rio Escondido), 

 in winter. 



Progne jnirpurea (not Hmindo purpurea Linnseus) Bonaparte, Compt. Rend., 

 xxxviii, 1854, 650 (California).— Baird, Proc. Ac. Nat. Sei. Philad., 1859, 

 303 (Cape St. Lucas). — Cooper and Suckley, Rep. Pacific R. R. Surv., xii, 

 pt. ii, 18(30, 186 (Fort Steilacoom and Nisqually Plains, Washington). — 

 Cooper, Orn. Cal., 1870, 113, part. 



Progne mibia (not Ilirundo subis Linnaeus) Baird, Review Am. Birds, 1865,274, 

 part (Cape St. Lucas). — Ridgway, Orn. 40th Parallel, 1877, 489, part (San 

 Francisco and Sacramento, California). — BELDiNG,"Proc. U. S. Nat. Mus., i, 

 1878, 408 (Stockton and Marysville, California); v, 1882, 547 (San Jose del 

 Cabo, Lower California). — Anthony, Auk, iii, LS86, 169 (Washington Co., 

 Oregon). — Eyermann, Auk, iii, 1886, 183 (Ventura Co., California). — Rath- 

 bun (S. F.), Auk, xix, 1902, 138 (Seattle, Washington, breeding). 



Progne subis hesperia Brewster, Descr. Sup. New Species Birds from W. N. Am. 

 andMex., Jan. 31, 1889, 92 (Sierra de la Laguna, Lower California; coll. 

 W. Brewster); Auk, vi, April, 1889, 92; Bull. Mus. Comp. Zool., xli, 

 1892, 164 (Lower (California; habits). — American Ornithologists' Union, 

 Auk, vii, 1890, 63; Check List, 2d ed., 1895, no. 611a.— Richmond, Proc. 

 U. S. Nat. Mus., xviii, 1893, 485 (Escondido R., Nicaragua, Sept. 13).— 

 Fisher, (A. K.), N. Am. Fauna, no. 7, 1893, 109 (Fort Tejon, California, 

 breeding). — Anthony, Zoe, iv, 1893, 243 (San Pedro Martir Mts., Lower 

 California, breeding from 2,500 ft. up). — Anthony, Auk, xii, 1895, 141 



« Fifteen specimens. 



Specimens from California and northward to Vancouver Island are decidedly larger 

 than those from the Cape St. Lucas district of Lower California, but since they do 

 not, so far as I am able to see, differ at all in color, should doubtless be referred to 

 the same form. Average measurements according to locality are as follows: 



Locality. 



MALES. 



Eight adult males from Cape St. Lucas 

 district 



Ten adult males from California 



One adult male from Vacouver Island . . . 



One adult male from Nicaragua (Blno- 

 fields, September) 



FEMALES. 



Three adult females from Cape St. Lucas 

 district 



Seven adult females from southern Cali- 

 fornia 



Four adult females from northern Cali- 

 fornia 



One adult female from Nicaragua (Rio 

 Escondido, September) ' 



Fork of 



tail. 



18.9 

 20.4 

 23 



16 



17.8 

 16.5 

 18.5 

 14 



