BIRDS OP NORTH AND MIDDLE AMEEIOA. 37 



dd. Head not black; under parts of body not light cinnamon; back not green- 

 ish black nor dusky. 

 e. Head changing from golden buff to silvery yellowish green, the forehead 

 and cheeks blue, the lores and chin black; back deep black; rump 

 bright blue; chest and sides of breast black. ( Calospiza larvata, adults. ) 

 /. Deeper colored (sides bright ultramarine, becoming bright cerulean or 

 turquoise blue on flanks, the throat cinnamon-rufous); greater wing- 

 coverts, remiges and rectrices more broadly edged with greenish; 

 slightly larger. (Southern Mexico to northern Honduras. ) 



Calospiza larvata larvata, adults (p. 47) 

 ff. Lighter colored (sides cerulean blue, becoming pale greenish blue or 

 bluish green on flanks, the throat orange-buffy or ochraceous) ; greater 

 wing-coverts, remiges and rectrices more narrowly edged with green- 

 ish (the edgings sometimes wanting on greater wing-coverts) ; slightly 

 smaller. (Southern Honduras to Isthmus of Panama. ) 



Calospiza larvata fanny, adults (p. 49) 

 66. Head grayish green, becoming whitish on throat; back dull or grayish 

 green, clouded with blackish or dusky laterally; rump dull green; sides 

 of chest and breast grayish or dusky. 



Calospiza larvata larvata, young (p. 48) 



Calospiza larvata fanny, young (p. 49) 



cc. Back neither black, dusky, nor dull green; rump neither blue nor green. 



d. Pileum, back, scapulars, and rump plain slate-gray; under parts pale gray, 



becoming whitish on abdo^nen; lesser wing-coverts bright blue. ( Veragua 



to central Colombia.) Calospiza inornata, adults (p. 51) 



dd. Pileum. rufous-tawny to very dark chestnut; back, scapulars, and rump 

 opalescent, dull greenish or buffy; under parts dliU bufty or greenish, 

 more or less opalescent; lesser wing-coverts dull greenish or bluish 

 green. 

 6. Smaller (wing 70.4-75.2) ; coloration darker, the pileum dark chestnut. 

 (Island of Grenada, Lesser Antilles; Venezuela.) 



Calospiza cuouUata, adults (p. 52) 

 ee. Larger (wing 75.7-78.7); coloration lighter, the pileum light chestnut to 

 rufous- tawny. (Island of St. Vincent, Lesser Antilles.) 



Calospiza versicolor, adults (p. 53) 



CALOSPIZA ICTEROCEPHALA (Bonaparte). 



SILVER-THROATED TANAGER. 



Adult male. — Pileum, nape, sides of head, and vrhole rump plain 

 glossy deep saffron or Indian yellow; back and scapulars similar 

 but rather paler yellow (sometimes slightly tinged with greenish), 

 broadly streaked with black; wings and tail black, the lesser and mid- 

 dle wing-coverts broadly tipped with yellow or greenish yellow, the 

 greater coverts, remiges, and rectrices edged with yellowish green; 

 chin, throat, and malar region and rather indistinct collar across hind- 

 neck pale buffy greenish or greenish buffy, more or less changeable 

 with different inclinations to the light; under part of body and under 

 tail-coverts plain saffron or Indian yellow, slightly tinged with olive- 

 greenish laterally; anterior portion of lores and a streak from rictus 

 along lower edge of suborbital and malar regions (widening more or 



