34 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



BUTHRAUPIS C^RULEIGULARIS Cherrie. 



CHERRIE'S TANAGEB. 



Similar to B. arcwi, but larger; sides and flanks extensively and 

 uniformly dusky bluish; chin and throat dull indigo blue, scarcely 

 darker than pileum, and under wing-coverts light yellow without con- 

 cealed dusky spots. 



Admit male. — Head (all round), hindneck, sides of neck, entire upper 

 parts, sides, and flanks, uniform dull indigo blue, the larger wing- 

 coverts, remiges, and rectrices, however, dull black, except on edges; 

 chest and breast (except laterally), belly, anal region, and under tail- 

 coverts bright yellow, changing gradually from rich Indian yellow on 

 the chest to lemon yellow on the under tail-coverts; axillars canary 

 yellow; under wing-coverts mixed primrose yellow and white; inner 

 webs of remiges dull brownish gray, paler on edges, these becoming 

 whitish toward base; thighs uniform dusky indigo blue; bill entirely 

 black; legs dusky horn color; feet dull blackish; length (skin), about 

 142.2 (tail imperfect); wing, 86.9; exposed culmen, 15.2; depth of bill 

 at base, 8.9; tarsus, 21.6; middle toe, 16.2. 



Although apparently very different from B. arcwi in the exten- 

 sively and uniformly dusky sides and flanks, this form is so closely 

 similar in other features of coloration that possibly it may only repre- 

 sent an extreme variation of that species. At any rate, additional 

 specimens will be necessary to establish its validity. 



Central Costa Rica (Buena Vista). 



Buihraupis caeruleigularii Cherrie, Proc. U. S. Nat. Mus., xvi, no. 956, Oct. 28, 

 1893, 609 (Buena Vista, s. w. Costa Rica; coll. TJ. S. Nat. Mus.). 



Genus CALOSPIZA Gray. 



(MListe (not Callista Poll, 1791) BoiE, Isis, 1826, 974. (Type, Tanagra tricolor 

 Linnaeus. ) 



Aglaia (not of Renier, 1804, nor of Eschscholz, 1825) Swainson, Zool. Jour., iii, 

 1827, 347. (Type, Tanagra tatao Linneeus. ) 



Calospiza Gray, List Gen. Birds, 1840, 44. (Type, Tanagra tricolor Linnseus.) 



CaZlospiza (emendation) Cabanis, Wiegman's Archiv. fiir Naturg., 1847, 317. 



Gyrola Eeichenbach, Av. Syst. Nat., 1850, pi. 77. (Type, Tanagra gyrola Lin- 

 naeus. ) 



Tatao Bonaparte, Compt. Eend., xxxii, 1851, 80. (Type, Tanagra tatao Lin- 

 nseus. ) 



Chrysothraupis Bonaparte, Rev. et Mag. de Zool., iii, Mar., 1851, 142. (Type, 

 Tanagra {Aglaia) aurulenta Lafresnaye.) 



Ixothraupis Bonaparte, Rev. et Mag. de Zool., iii, Mar., 1851, 143. (Type, 

 Tanagra. punctata Linnseus. ) 



