102 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Chrysomitris atriceps Salvin, Proc. Zool. Soc. Lond., 1863, 190 (Quezaltenango, 

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

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

 Am., Aves, i, 1886, 429, pi. 31,figs. 1, 2.— Shakpe, Cat. Birds Brit. Mus., xii, 

 1888, 200. 



[Chrynomitris'] air ic«ps Solater and Salvin, Nom. Av. Neotr. , 1873,34. 



[Fringilla] atriceps Gkay, Hand-list, ii, 1870, 81, no. 7180. 



S. [pinus'] atriceps Eidgway, Man. N. Am. Birds, 1887, 400. 



SPINUS NOTATUS NOTATUS (Du B<is). 

 BLACK-HEADED SISKUT. 



Adult male. — Head, all i-ound, and foreneck, to upper part of chest, 

 deep black; hindneck, back, and scapulars j'ellowish olive-green, the 

 feathers with black central spots (sometimes mostly concealed and 

 inconspicuous) ; rump and under parts of body deep wax yellow or 

 dull gamboge yellow; wings, tail, and upper tail-coverts deep black, 

 the former relieved by a conspicuous area of bright lemon yellow on 

 the basal portion of the remiges (mostly concealed on secondaries but 

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

 of rec trices (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 rather less extended. 



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

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

 foi-ming two bands; rectrices dusky becoming yellow basally (but not 

 abruptly, as in adults) ; rest of upper parts dull j^ellowish olive, some- 

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

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

 light wax yellow; under tail-coverts more or less sti-eaked with dusky. 



Adult maZ^^.— Length (skins), 101.60-115.06 (106.43); wing, 60.96- 

 67.56 (63.75); tail, 35.56-42.16 (39.12); exposed culmen, 10.92-12.19 

 (11.43); depth of bill at base (two specimens), 7.37-7.62 (7.49); tarsus, 

 12.45-13.21 (12.95); middle toe, 9.91-11.18 (10.67).' 



Admit female.— \j&\^^ (skins), 100.33-105.92 (103.12);*= wing, 60.71- 

 64.01 (62.48);' tail, 36.32-39.88 (37.85);' exposed culmen, 10.41-11.18 

 (10.92);' tarsus, 12.70-13.46 (12.95);' middle toe, 10.41.' 



2 



' Eight specimens. 



'' Two specimens. 



' Three specimens. 



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

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



Five specimens from Santa Ana, Honduras, are, 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 ilexican examples. I can not 

 discern any difference between the immature birds. There are likewise no perfectly 

 adult birds from Guatemala in the collection. 



