708 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Adult male—tLength (skins), 139-168 (155); wing, 157.5-175 
(165.8); tail, 53-66 (61); exposed culmen, 6—7.5 (6.8); tarsus, 12-13.5 
(12.9); middle toe, 10-10.5 (10.2).¢ 
Adult female.—Length (skins), 137-160 (147); wing, 156-164 (160); 
tail, 47-58.5 (52.5); exposed culmen, 6.5-7 (6.9); tarsus, 12-13 (12.5); 
middle toe, 9-10.5 (9.6).® 
Western North America and southward to southern Mexico (to 
Guatemala?) ; north to British Columbia (Victoria; New Westminster; 
Ashcroft; Sumas; Kamloops; Vernon; Lake La Hache; Comox; 
Okanogan; Clinton; Caribou District; Chilliwack; Lula Island) and 
southern Alaska (Revillagigedo Island; Boca de Quadra), eastward 
to Colorado and New Mexico, southward to Lower California (San 
Quintin; San Carlos Landing; San Telmo; San Pedro Martir Moun- 
tains), and southern Mexico, in States of Vera Cruz (Orizaba; Jalapa; 
Jico), Tlaxcala (Laguna del Rosario), Mexico (Rio Seco near Cér- 
dova), Puebla (San Miguél Molino), Durango (Huasamota), and 
Oaxaca (Guichicovi) and Territory of Tepic (Sierra Madre; Santa 
Teresa) to highlands of Guatemala (Raxché; Cobian; Duefias; Alo- 
tenango) and Honduras. 
Cypselus borealis KENNERLY, Proc. Ac. Nat. Sci. Phila., ix, 1857, 202 (Simiahmoo 
Bay, Washington; coll. U. S. Nat. Mus.). 
Nephacetes borealis ScuaTER, Proc. Zool. Soc. Lond., 1859, 236 (Vancouver Island). 
Cypseloides borealis SctaTER, Proc. Zool. Soc. Lond., 1865, 615 (Puget Sound; 
monogr.); Journ. fiir Orn., 1867, 138. 
[Chextura] borealis Gray, Hand-list, i, 1869, 68, no. 785. 
Nephecetes niger borealis Ripeway, Bull. Essex Inst., vii, Jan., 1875, 17, 38 
(Pyramid Lake Reservation, Nevada).—Cougrs, Check-list, 2d ed., 1882, no. 
404. 
Nlephecetes| niger borealis Couns, Key N. Am. Birds, 2d ed., 1884, 457. 
[Nephecetes] niger var. borealis Couns, Key N. Am. Birds, 1872, 183. 
a Ten specimens. b Nine specimens. 
Ex- . 
Locality. Wing. | Tail. | posed | Tarsus. Middle 
toe. 
lculmen. i 
MALES. 
Ten adult males from western United States and British 
COMM DIS siés0:ecrisanizecmeccs rear eeetaseckaateenmEereE ete 165.8 61 6.8 12.9 10.2 
Five adult males (NV. . costaricensis) from Costa Rica......... 159 58.6 6.6 12.4 9.5 
FEMALES. 
Four adult females from western United States and British 
Colombia: .seciec sicie ss He sckeeceuccesamse came eeeeenemore 162 51.2 6.8 13 9.8 
Five adult females from Mexico.........-. ERC Sue 158. 4 53.5 7 12.3 9.3 
Four adult females (NV. n. costaricensis) from Costa Rica... .... 157.1 51.9 6 12.3 9.5 
¢I have not seen specimens from Guatemala or Honduras, and therefore can not 
be sure that they are referable to this northern form, 
