476 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



KEY TO THE SPECIES OF OEEOTHLYPIS. 



a. Above bluish gray, with a triangular patch of black on back; chin, throat, chest, 

 and upper breast cadmium orange; no white on side of head. (Highlands of 



Oosta Bica and Chiriqui. ) Oreothlypis gntturalis (p. 476) 



aa. Above olive-green, with pileum, hindneck, wings, and tail gray; chin, throat, 

 chest, and upper breast canary yellow, the chest with a central spot of chest- 

 nut; a broad white superciliary stripe. ( Highlands of Mexico and Guatemala. ) 



Oreothlypis superciliosa (p. 477) 



OREOTHLYPIS GUTTURALIS (Cabanis). 

 IRAZt WARBLER, 



Adults (sexes alike). — Above plain slate-gray, the back with a large 

 triangular patch of black; lores, suborbital region, and anterior por- 

 tion of malar region black, fading gradually into the slate-gray of the 

 malar region; chin, throat, and chest rich orange or cadmium orange 

 (varying to Indian yellow or cadmium yellow, sometimes almost flame 

 scarlet); median portion of breast, abdomen, and under tail-coverts 

 white; sides and flanks light gray (no. 7 or no. 8); bill blackish, with 

 lower basal portion light colored; iris brown; legs and feet (in dried 

 skins) dusky horn color. 



Young female} — Above dull plumbeous-graj'^, with a triangular 

 patch of black on the back, as in the adult; chin, throat, and chest 

 pale dingy buff, the feathers gi'ayish white beneath the surface, their 

 bases deeper grayish; rest of under parts whitish medially, grayish 

 laterally. 



Adult maZe.— Length (skins), 106-122 (116); wing, 64-67 (65.5); 

 tail, 48-50 (48.7); exposed culmen, 10-12 (10.7); tarsus, 15-10 (17); 

 middle toe, 10-12 (10.7).' 



Adult female.^ljQngih (skins), 100-123 (111); wing, 59-64 (61.6); 

 tail, 42-48 (45), exposed culmen, 10-12 (11); tarsus, 18-19 (18.5); 

 middle toe, 11-12 (11.5).' 



High mountains of Costa Rica (Volcan de Irazu; Rancho Redondo) 

 and Chiriqui (Volcan de Chiriqui). 



CompsotMypis gutturalis Cabanis, Journ. fiir Orn., Sept., 1860, 329 (Irazd, Costa 



Rica; coll. Berlin Mus.). 

 Parula gutturalis Baird, Review Am. Birds, 1865, 169, 172 (Rancho Redondo, 



Costa Rica).— Lawrence, Ann. Lye. N. Y., ix, 1868, 93 (Irazii, Costa Rica.)— 



Frantzius, Journ. fur Orn., 1869, 292 (Irazu, Costa Rica).— Salvin, Broc. 



Zool. Soc. Lond., 1870, 182 (Volcan de Chiriqui, Chiriqui) .—Boucard, Proc. 



Zool. Soc. Lond., 1878, 52 (Volcan de Irazii, alt. 6,000 ft.).— Salvin and 



Godman, Biol. Centr.-Am., Aves, i, 1880, 123, pi. 8, fig. 3.— Nutting, Proc. 



U. S. Nat. Mus., V, 1882, 494 (Volcan de Irazii).— Sharpe, Cat. Birds Brit 



Mus., X, 1885, 263, 643. 

 [Parwfa] gutturalis Sclater and Salvin, Nom. Av. Neotr., 1873, 8. 



'Described from a specimen (no. 2116) in the Costa Rica National Museum, from 

 Anchiote, Costa Rica. 

 - Four specimens. 

 " Two specimens. 



