784 Annals of the Carnegie Museum. 



572. Vireosylva flavoviridis flavoviridis Cassin. 



Vireosylvia flavoviridis Cassin, Proc. Acad. Nat. Sci. Phila., 1851, 152, pi. 11 

 (Panama; coll. Acad. Nat. Sci. Phila.). — Baird, Review Am. Birds, 1866, 

 336 (San Jose [Frantzius]). — Frantzius, Jour, fur Orn., 1869, 295 (San 

 Jose). — Boucard, P. Z. S., 1878, 53 (San Jose). — Nutting, Proc. U. S. 

 Nat. Mus., V, 1882, 391 (La Palma de Nicoya). 



Vireosylvia flavo-viridis Lawrence, Ann. Lye. N. Y., IX, 1868, 96 (San Jose 

 [Frantzius], Atenas [Cooper]). 



Vireo flavoviridis Salvin and Godman, Biol. Centr.-Am., Aves, I, 1881, 189, 

 part (Costa Rican references). — Zeledon, An. Mus. Nac. de C. R., I, 

 1887, 108 (San Jose, Alajuela, Tambor de Alajuela). — Cherrie, Auk, VII, 

 1890, 329-331 (San Jose; habits; descr. nest and eggs); 335 (San Jose, 

 middle of April to Sept. 29); Expl. Zool. en C. R., 1890-1, 1893, 15 (Lagarto, 

 Terraba, and Buenos Aires). — Underwood, Ibis, 1896, 434 (Miravalles). 



Phyllomanes flavoviridis Cabanis, Jour, fur Orn., 1861, 93 (Costa Rica). 



Vireo agilis Zeledon, An. Mus. Nac. de C. R., I, 1887, 108 (San Juan). 



Vireosylva flavoviridis flavoviridis Ridgway, Birds N. and Mid. Amer., Ill, 1904, 

 144 (from northern Mexico to Isthmus of Panama, and southward to Ecuador, 

 Peru, and Bolivia). — Bangs, Auk, XXIV, 1907, 305 (Boruca, Paso Real, 

 and Barranca de Terraba [Underwood]). 



U. S. Nat. Museum: San Jose (Ridgway and Zeledon) (Cherrie) (Alfaro) ; 



Alajuela (Alfaro). 

 Acad. Nat. Sci. Philadelphia: San Jose, Monte Redondo, and Aguacate 



Mts. (Underwood). 

 Bangs Collection: El General, Buenos Aires, Carrillo, San Jose, El Mojon 



(Underwood). 

 Carnegie Museum: San Jose, Guaitil, Boruca, Buenos Aires, Esparta, 



Puntarenas, Miravalles, Bebedero (Carriker). Nineteen skins. 



This is the most abundant vireo in Costa Rica in the region of the high- 

 lands as well as over the whole of the Pacific slope and lowlands. In life 

 it resembles exceedingly its near relative, V. olivaceus, both in song, 

 habits, and habitat, although in many ways it also resembles the War- 

 bling Vireo (V. gilva gilva), especially in the construction of the nest. 

 I took a nest of the species at Puntarenas, June 8, 1907, containing three 

 fresh eggs. The nest was a beautiful structure, very compact, and well 

 made of weed-fibres and bark, covered over on the outside w r ith golden 

 and white spider-webs and spider egg-cases, and lined with fine, round, 

 pale brown fibres, exactly after the manner of the Warbling Vireo. The 

 eggs are white, speckled and dotted sparingly over the whole surface with 

 deep burnt-umber brown. The nest was suspended from a horizontal 

 fork among the thick foliage of a fruit-tree of some tropical variety, about 



