816 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiv. 
OTOCORIS ALPESTRIS ARCTICOLA, new subspecies. 
Otocorys alpcHtrin leucohcma IIenshaw, Auk, I, July, 1884, p. 258 (part; not of 
Couew). 
Olocoris alpcstris leucolxma Dwight, Auk, VII, April, 1890, p. 142 (part).— 
RiDGWAY, Man. N. Am. Birds, 2d ed., 1896, p. 348 (part). 
CJittrs. snhsp. — Resembling Otocorh a. hoi/t!, but upper .surface 
paler and more oraAn.sh, the throat pure white, 
3L((mrem<'nt.^ {15 inal(S).—^N'mg, l08.5-lltl:.5 (average, 111.5) mm.; 
tail, 67.5-71 (average, 70.7) mm.; exposed culmen, 10-12.5 (average, 
11.3) mm.; tarsus, 21.5-21 (average, 22.7) mm.; middle toe, 12-13 
(average 12.6) mm. 
Tijjje locality. — Fort Reliance, Yukon River, British America. 
Ge(Kjr<iph!c(d (Vdrihutlou. — In sunnner, Alaska (chieHy the interior), 
with the valley of the Upper Yukon River; in winter, south to Ore- 
gon, Utah and Montana. 
Description. — Adult male in hreedUxj phiiiKKjc — Type, No. 78565, 
U.S.N.M.; Fort Reliance, Yukon River, liritish America, May 7, 1879; 
E. W. Nelson. Back and wings fuscous, the feathers edged with [)aler 
brown; hind part of crown, occiput, nape, bend of wing and upper tail- 
coverts pinkish vinaceous; middle pair of tail-feathers like the back; 
the rest brownish black, the outer ones margined with whitish; fore 
part of crown, horns, lores, cheeks and jugular crescent ]>lack; fore- 
head, superciliary^, throat and remainder of lower parts dull white, 
the sides streaked with l)rown. 
Adult female In hreedlmj 'pluz/an/e.—No. 70869, U.S.N.M.; St. 
Michael, Alaska, June 1, 1876; Lucien M. Turner. Head, ])ack, scapu- 
lars and rump blackish brown, the feathers margined with buft'y; nape 
brownish gray with l)ut a slight tinge of pink, and narrowly streaked 
with brown; wings fuscous, edged with ]»urt'y and ochraceous, the bend 
of wing with same cinnamomeous admixture; tail like that of adult 
male, but more brownish; lores, cheeks and juguluni dull )»lack; fore- 
head, superciliary, throat and rest of lower surface dull white, the 
sides washed Avith brownish and streaked with darker. 
Adult )ii(dt In winter 2>lamage.—^o. 153227, U.S.N. M.; Oosoyos, 
British Columbia, December 2, 1893; C. De B. Green. Very similar 
to the summer male, l)ut head and nape much obscured ])y l»rownish 
tips to the feathers, the nape, ])end of wing and superior tail-coverts 
more pinkish; the Idack areas more or less obscured by paler tips to 
the feathers; the breast with some dusky streaks. 
Adult female in winter plumage.— l^o. 153228, U.S.N.M. ; Okanagan, 
British Columbia, December 2, 1893; C. De B. Green. Similar to the 
summer female, l)ut much paler and more grayish, the upper surface 
decidedl}' more uniform; the l)lack arinis much o])Scured b}^ grayish 
tips to the feathers; breast much streaked with dusky and sides more 
deeply shaded with the same. 
