102 BULLETIN 50, UNITED STATES "NATIONAL MUSEUM. 



Chri/soinitrls atriceps Salvix, Proc. Zool. Soc. Lond., 1863, 190 (Quezaltenango, 

 Guatemala, alt. 8,000 ft. ; coll. Sal vin and. Godman); Ibis, 1866,194 (Quezalte- 

 nango). — RiDGWAV, Ibis, 1884, 43 (crit.). — Salvin & Godman, Biol. Centr.- 

 Am., Aves, 1,1886,429, pl.31, figs. 1, 2.— Sharpe, Cat. Birds Brit. Mus., xii, 

 1888, 200. 



\_Chrysomitri,'<'\ atriceps SchATER and Salvin, ^Xoni. Av. Neotr., 1873,34. 



{FringiUa'] atriceps Gray, Hand-list, ii, 1870, 81, no. 7180. 



S.[pinus'] atriceps Ridgway, Man. X. Am. Birds, 1887, 400. 



SPINUS NOTATUS NOTATUS (Du Bus). 

 BLACK-HEADED SISKIN. 



Adult male. — Head, all round, and foreneek, to upper part of chest, 

 deep black; hindneck, back, and .scapulars yellowish olive-o-reen, the 

 feathers with black central spots (sometimes mostly concealed and 

 inconspicuous) ; rump and under parts of bod}" deep wax yellow or 

 drill gaml^oge yellow; wings, tail, and upper tail-coyerts deep black, 

 the former relieyed by a conspicuous area of bright lemon 3-ellow on 

 the basal portion of the remiges (mosth" concealed on secondaries l)ut 

 occupying exposed third or more of primaries), the basal half, or more, 

 of rectrices (except middle pair) also lemon yellow; bill horn color 

 (sometimes bluish gray basally); legs and feet horn color. 



Adult female. — Similar to adult male but colors duller, with yellow 

 areas of wings and tail rathei" less extended. 



YouiKj. — Wings as in adult female, but yellow on remiges still more 

 restricted, and middle and greater coyerts tipped with pale yellow, 

 forming two bands; rectrices dusk}" becoming yellow basally (but not 

 abruptly, as in adults); rest of upper parts dull yellowish oliye. some- 

 what darker on crown, where indistinctly streaked with dusky; under 

 parts, including chin, throat, foreneek, and sides of head and neck, 

 light wax yellow; luider tail-coyerts more or less streaked with dusky. 



Adult /y«/A/.^Length (skins), 101.60-115.06 (106.13); wing, 60.96- 

 67.56 (63.75); tail, 35.56-12.16 (39.12); exposed culmen, 10.92-12.19 

 (11.13); depth of bill at ])ase (two specimens), 7.37-7.62 (7.19); tarsus, 

 12.15-13.21 (12.95); middle toe, 9.91-11.18 (10.67).^ 



Adidtfemale.-AjQwgih. (skins), 100.33-105.92 (103.12);' wing, 60.71- 

 61.01 (62.1S);' tail, 36. 32-39. SS (37.85);' exposed culmen, 10.41-11.18 

 (10.92);-' tarsus, 12.70-13.16 (12.95);- middle toe, lo.ll.- 



^ Eight specimens. 



■■^ Two specimens. 



^ Three specimens. 



Owing to the insufficiency of material, many specimens being undetermined as to 

 sex, I am unable to give comparative average measurements according to locality. 



Five specimens from Santa Ana, Honduras, ai'e, unfortunately, all immature birds 

 (one of them in first plumage, the other four in transition dress), and I am therefore 

 unable to say whether the Honduras birds differ from Mexican examples. I can not 

 discern any difference l:)etween the immature birds. There are likewise no perfectly 

 adult birds from Guatemala in the collection. 



