106 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



thirds to much more than length of tarsus, slightly rounded, even, or 

 faintly emargiuate, the rectriees rather narrow, with compact webs 

 and rather pointed tips. Tarsus slender, decidedl}^ longer than middle 

 toe with claw; lateral claws reaching about to base of middle claw; 

 hind claw shorter than its digit, strongly curved. 



Coloi'ation. — Adult males with more or less of yellow, varied in uni- 

 form areas with black, rufous, or olive-green, or with all these; 

 females and j'oung very different — plain olive or olive-green above, 

 3^ellowish beneath. 



Range. — Costa Rica to Paraguay, Bolivia, and Peru. 



Although having the bill a little more slender, II. chrysomela.<< (the 

 only species known to occur north of the Isthmus) differs far less from 

 some of the species of Ilemisplngus than certain of the latter do from 

 one another, and 1 have no doubt that here is its proper position. It 

 certainh" is far more out of place in Tachyphonua., to which it was 

 originally assigned and where it has b}^ common consent been kept. 



Ileiiiithniuph differs from J^einosia^ in relatively longer wing and 

 tail, more slender bill with straight instead of distinctly convex gonys, 

 and very different stjde of coloration. 



HEMITHRAUPIS CHRYSOMELAS (Sclaler and Salvin). 

 BLACK AND YELLOW TANAGER. 



Adult male. — Entire head, necik, rump, and under parts clear, rich 

 yellow, rather paler (lemon 3^ellow) below, sometimes inclining to 

 orange on pileum and hindneck; a narrow orbital ring of black, 

 l)roadest beneath posterior half of eye; back, scapulars, wings, upper 

 tail-coverts, and tail uniform deep black; inner webs of rectriees edged 

 with light yellow; under wing-coverts white, tinged with yellow; axil- 

 lars and edges of inner webs of remiges white, usutill^^ tinged with 

 pale yellow; bill black; legs and feet (in dried skins) dusky horn color; 

 length (skin), about 114.3; wing, 64.3-68.6 (66.8); tail, 47-49.5 (48.5); 

 exposed culmen, 11.9-12.7(12.3); tarsus, 16.5-17.3 (16.8); middle toe, 

 •\ 2-10.4.' 



Adult female. — Above plain yellowish olive-green; wings dusky 

 grayish brown with ])road yellowish olive-green edgings; under parts 

 gamboge yellow mediall}-, shading into yellowish olive-green (lighter 

 than that of upper parts) laterally; under tail-coverts pale buffj^; 

 under wing-coverts Avhiti.sh; bill black; legs and feet (in dried skins), 

 dusky horn color; length (skin), 106.7; wing, 60.7; tail, 41.4; exposed 

 culmen, 11.4; tarsus, 17.8; middle toe, 10.4.* 



Costa llica (Talamanca) and Veragua (Cordillera del Chucu). 



TachypJionus chrymmelas Sclatek and Salvin, Proc. Zool. Soc. Loud., 1869,440, 

 pi. 32 (Cordillera del Chucu, Veragua; coll. Salvin andGodnian). — Salvin, 



^ Nemosia Vieillot, Analyse, 1816, 32. (Type, Tanagra p'deata Boddsert.) 

 ^ Three specinieiiHi. 

 ^ One specimen. 



