f 



nil 



248 



LONG-WIXOED SWIMMERS - LONGIPENNES. 



m 



Ji 



i 



^•^ "^ 



V 



> 



Outer primary slate ' ck, about 2.50 iiiclies of tlie subtoriuiiial portion (includinf^ the sliaft) 

 white, the tip ai,'aiu ))hu'k ; inner web more shity than tiie outer, the basal hall' sometimes ashv 

 white, minutely tieckled with darker, l)ut usually unil'orm slaty fjray, paler basally ; seeond ijiiill 

 with tlie basal iiaH'ol'the outer web and much more of the inner pale bluish gray (much like tlir 

 mantle), a larj^e space of wiiite, about 1.75 inches in extent, near the end, the intervening; sjiace 

 black, abruptly contrasted with the basal pale bluish ^'ray ; a small apical spot of white, ju'eceihd 

 by a broad subterminal one of black, about .70 of an incii in lenj^th ; third (piill tipped with white. 



the subterminal portion black for about 1.00 im h 

 on the inner, and more than 2.00 inches on thr 

 outer web (next the shaft), the remainir.j; porlinu 

 pale p'ayisii blue, becoming; nearly or 'juite while 

 on the inner Web where adjoiniiiLttiie black ; fouiih 

 (piill similar, but the black moie restricted, and 

 the outer web becctminj,' white lujsteriorly ; liftli. 

 similar, Init with the black space moi'e restrictcil, 

 forming' a subterminal band about .75 of an inili 

 wide, the white precedinj; it still more e.\tensivc 

 than on the fourth ipiill ; sixth with a still nar- 

 rower black band (-eldom more, j,'enerally less, than 

 .50 of an inch wide) ; remainiuj^ ([uills pale ]ie,ir]- 

 blue, passinj; ^'radually, but broadly, into while, 

 terminally, the .seventh sometimes with a small 

 black bar near the end of the outer web. Rest ot 

 the jdumatje snow-white. " Bill bluisli j,'rppn, its terminal third b; jrht yellow ; le},'s and I'lcl 

 dusky bluish green, tlie webs yellowish " (Coi'Ks).* Adult, in winttr : Similar, but the head and 

 neck, sometimes also the jugulum, loii;.,'iludiiial]y spotted with lijjbl ^'layisli lirown. Xintiij mhill : 

 Similar, but the white of the primaiies more restricted and the black more extended, llie lalhr 

 color more brownish ; (juills without white apical spots ; bill more or less dusky terminally ; tail 

 sometimes (in youuj^'er individuals) more or less blotched with dusky terminally, and upper tail- 

 coverts sometimes (rarely) faintly l)arrcd with grayish brown. Head, etc., spotted or immaculair, 

 according to the season. Yimug, Jint phimtuje : Above, grayish brown, the feathers widely ainl 

 distinctly bordered with pale grayish butr ; rum)) and upper tail-coveils grayish bulfy white, ni.irkc d 

 more or less distinctly with irregularly sagittate s]>ots of giayish brown ; basal half of the I. til 

 grayish white or pale grayish, transversely mottled with darker ; terminal portion dusky gravisli 

 brown, forming a well-deliiied broad zone, the tip whitish. Heail, neck, and lower jiarts nearly 

 uniform li^ht brownish gray. Primaries unil'orm dusky grayish brown, the terminal margin paler. 

 Bill dusky, moie brownish at ba.so ; feet (in skin) light brown. Ulihr: Similar, but the li:.;iil 

 borders tt) the feathers of back, etc., purer white ; basal half of the tail uniform bluish whii.' ; 

 lower jKU'ts white, the breast and sides s]>otted with light grayish brown ; basal half (or less) of I lie 

 bill light c(dored. Upper parts more or less tinged with the |>ale blue of the adult plumage. 



Total length, about 17.50 to IH.IH) inches; extent 43; wing, 1:5.20-11.50 (average, KV!);!); 

 eulmen, 1.2.5-1.70 (1.45); depth of bill, .4()-.50 (.4.5); tarsus, 1.70-2.10 (l.!U) ; middle i..c, 

 1.30-1.,55 (1.44). [Twenty-six a.lulls.j 



This species, wjiile agreeing closely with L. canm in size ami general appearance, may be very 

 easily distinguished wlie:i adult by the dissimilar pattern of the primaries, and the sonu'wiiat 

 different proportions, as shown in th(> diagnosis on p. 210. In many specimens (chielly yonn_''r 

 individuals), the dark portion of the jirimaries is dusky brownish, instead of black. In one (N '. 

 702!>!), St. Michael's, Alaska; L. M. TruNKU), a perfectly adult, though prol^idy not a very old, 

 biril, this color is ipiite a light grayish brown, as though the color had been washed out, tlic 

 putturu being the same as in most ailiilt specimens. 



' "Adult, high brccding-phimagi' : Eyelids, ocular region, and gnpe of mouth, liright oningo-yelliiw, 

 which color pxtends over the tip and cutting edijes .)f the bill ; the green of the bill with a peculiar Iiomiv 

 glnuce.scei.en. Logs and feet bluish green, the webs briglit gaadxige-yellow " (Coitus). 



AdiiU mule (\n. 7020it, V. S. Nat. Mas,, St. Michael's, .Maska, May 31, 1875); " Iris dark hnz.l ; 

 bill, feet, and tnes dark greenish yellow, webs yollowish ; eyelids erimsun " (I.. M. TriiNKli, MS.). 



