Carriker : List of the Birds of Costa Rica. 781 



mained unknown from that time until 1889, when Messrs. Alfaro and 

 Cherrie took a single specimen at Puntarenas, which specimen I believe 

 is now in the collection of the Museo Nacional de Costa Rica. The only 

 other specimens which have been collected are two males taken by Mr. 

 Ridgway, at Pigres, near Puntarenas, in 1905, making five specimens in 

 all of the species which have thus far been taken, of which four came from 

 Costa Rica. 



It would seem that this bird, like the rare hummingbird, Agyrtria 

 boucardi, is found only in the mangroves of the Pacific coast of Nicaragua 

 and Costa Rica, but collecting in those places is so difficult that it would 

 be very hard to find them, few collectors caring to spend much time at 

 such a laborious task. 



568. Lanivireo flavifrons (Vieillot). 



Vireo flavifrons Vieillot, Ois. Am., I, 1807, 85, pi. 54 (United States). — Cab- 

 anis, Jour, fur Orn., i860, 405 (highlands of Costa Rica, Sept. [Hoffmann]). 

 — Salvin and Godman, Biol. Centr.-Am., Aves, 1, 1881, 104 (Costa Rican 

 references; Irazu [Rogers]). — Gadow, Cat. Birds Brit. Mus., VIII, 1883, 

 298. — Zeledon, An. Mus. Nac. de C. R., I, 1887, 108 (San Jose and Tar- 

 coles). — Cherrie, Auk, VII, 1890, 335 (San Jose, Oct. 25; seldom met 

 here); IX, 1892, 23 (San Jose, Oct. 4, 1890; rare bird); Expl. Zool. en C. R., 

 1890-1, 1893, Palmar, Boruca, and Buenos Aires; four specimens, not com- 

 mon). — Underwood, Ibis, 1896, 434 (Miravalles). 



Vireosylva flavifrons Baird, Rev. Am. Birds, 1866, 346 (Grecia, Dec, San Jose 

 [Carmiol]; Puntarenas, Mar. 18, 1862 [J. M. Dow]). — Boucard, P. Z. S., 

 1878, 53 (San Jose, Jan., March). 



Lanivireo flavifrons Lawrence, Ann. Lye. N. Y., IX, 1868, 96 (San Jose [J. 

 Carmiol]). — Frantzius, Jour, fur Orn., 1869, 295 (Costa Rica). — Ridgway, 

 Birds N. and Mid. Amer., Ill, 1904, 163 (eastern U. S., breeding irom Maine 

 to Florida; in winter southward through eastern Mexico and Central America 

 to Colombia). 



U. S. Nat. Museum: Pigres, March, 1905 (Ridgway). 



C. H. Lankester Collection: Cachi, Nov., 1908. 



Fleming Collection: Carrillo, Nov. (Underwood). 



Carnegie Museum: Guapiles, Jan. 19, 1904; El Hogar, Dec. 25, 1906 



(Carriker). Two skins. 



The Yellow-throated Vireo is a rare winter visitor, arriving in Costa 

 Rica in about the same numbers as does the Red-eyed Vireo. It has 

 been taken on the lowlands of both coasts as well as in the high- 

 lands of the interior. I suspect that it may be more abundant in the Car- 

 ibbean lowlands than in any other part of the country, although I have 

 no absolute proof to that effect. 



