BIRDS OF NORTH AND MIDDLE AMERICA. 101 



aljout 6.35 mm. or more in length, the concealed l)asal portion of the 

 secondaries likewise yellow; primar}- coverts and alula uniform black; 

 tail black, with about the basal half yellow, except middle rectrices, 

 which are blackish throughout, edged with olive-green, as is likewise 

 the blackish portion of the outer rectrices; bill horn color; legs and 

 feet similar, but darker. 



Immature riiaJef^ — Similar to the preceding, but the olive-green of 

 upper parts much duller, becoming decidedly gv^y on hindneck; sides 

 of head and under parts dull gvivy^ with a slight tinge of olive-green on 

 chest and sides; under tail-coverts pale graj^ish, with scarcel}' a trace of 

 yellowish tinge; yellow at base of remiges both brighter and more 

 extended. 



Immature {?) tnale." — Similar to the preceding, but back and scapu- 

 lars gray, slightly mixed with olive-green, the interscapulars distincth' 

 but narrowly streaked with dusky; sides of head and under parts, 

 including whole throat and chin, plain light gray, becoming white on 

 aV)domen. 



Younger {sex not ddermined). — Similar, but pileum dull olive, the 

 feathers with dusky centers, producing an indistincth- spotted appear- 

 ance; flanks indistinctly streaked with dusky. 



Adult inale.—hewgth. (skins). Hi. 30-116. 84 (115.57); wing, 71.12- 

 72.30 (71.63); tail, 15.72-18.51 (17.50); exposed culmen, 10.11-11.13 

 (10.U2); depth of bill at base, 5.SJ^7.11 (6.35); tarsus, 13.97-11.73 

 (11.22); middle toe, 10.U2-12.19 (11.13). =* 



Highlands of Guatemala (Quezaltenango, Hacienda Chaucol, etc.) 

 and Chiapas (San Cristobal). 



This very distinct species is apparently more nearly related to 

 S. 2^i>^i{s than to S. notatus^ the size and proportions being ver}' nearh" 

 the same. The full}' adult male somewhat resembles in coloration 

 that of S. spinescens, of Colombia, but, besides having a much longer 

 wing and tail and differently shaped bill (the last broader basally but 

 more attenuated terminalh), has the color of the under parts verj 

 difl'erent (\^ellowish olive or gra}' instead of bright olive-yellow), and 

 the olive-green tips to the wing-coverts and margins to tertials much 

 broader. S. sjyinescens likewise has no dusk}' on the chin or throat, 

 and no dusky streaks on the under tail-coverts. 



^ Possibly the adult female, since the date is the same as that of the adult male 

 described and the plumage is somewhat worn, thus indicating that it is at least a 

 bird of the second year. (Both specimens from Quezaltenango, Guatemala, August, 

 1862, in the Salvin-Godman collection. ) 



■' Xo. 143725, U. S. Nat. Mus. (no. 3375, coll. U. S. Biol. Survey) , Jlucienda Cliancol, 

 Guatemala, Jan. 9, 1896; Nelson and Goldman. 



^ Four sx^ecimens. No adult female seen by me. 



