728 Annals of the Carnegie Museum. 



498. Platytriccus cancrominus (Sclater and Salvin). 



Platyrhynchus cancrominus Sclater and Salvin, P. Z. S., i860, 299 (Guatemala). 

 — Sclater, Cat. Birds Brit. Mus., XIV, 1888, 66 (no C. R. specimens). — 

 Salvin and Godman, Biol. Centr.-Am., Aves, II, 1888, 5 (Mexico to Nica- 

 ragua). — Underwood, Ibis, 1896, 437 (Miravalles, Costa Rica). 



Platytriccus cancrominus Ridgway, Proc. Biol. Soc. Wash., XVIII, 1905, 211 

 (critical); Birds N. and Mid. Amer., IV, 1907, 382 (Volcan de Miravalles, 

 Bebedero, and Pozo Azul de Pirris). 



Acad. Nat. Sci. Philadelphia: Bebedero (Underwood). 



Bangs Collection: Pozo Azul de Pirris, Bolson, Tenorio (Underwood). 



C. H. Lankester Collection: Miravalles. 



Carnegie Museum: Pozo Azul de Pirris, Bebedero, Miravalles, Bagaces, 



Esparta (Carriker). Seven skins. 



This bird is confined entirely to the northern Pacific coast of Costa Rica, 

 thence northward. It has not been taken south of the Rio Grande de 

 Pirris, and is most abundant in Guanacaste, in the lower Rio Tempisque 

 Valley. It is found, like the other members of the genus, only in the 

 forest, keeping near the ground, perching on low limbs of trees and shrub- 

 bery and catching insects on the w T ing. 



499. Placostomus superciliaris (Lawrence). 



Platyrhynchus superciliaris Lawrence, Ibis, April, 1863, 184 (Lion Hill, Panama 

 [M'Leannan]). — Ann. Lye. N. Y., IX, 1868, no (Valsa [J. Carmiol]). — 

 Frantzius, Jour, fur Orn., 1869, 307 (C. R.). — Sclater, Cat. Birds Brit. 

 Mus., XIV, 1888, 68 (no C. R. specimens). — Salvin and Godman, Biol. 

 Centr.-Am., Aves, II, 1888, 6 (Costa Rica to Guiana). — Cherrie, Expl. 

 Zool. en C. R., 1890-1, 31 (Lagarto and Boruca). 



Placostomus superciliaris Ridgway, Proc. Biol. Soc. Wash., XVIII, 1905, 208 

 (critical); Birds N. and Mid. Amer., IV, 1907, 379 (Valsa, Rio Naranjo, 

 Pozo Azul de Pirris, Pozo del Pital, Las Trojas, La Conception de Jimenez, 

 Carrillo). — Bangs, Auk, XXIV, 1907, 300 (Boruca, El Pozo and Paso Real 

 de Terraba [Underwood]). 



Bangs Collection: Pozo Azul de Pirris, Carrillo, La Vijagua, El General 



de Terraba, Reventazon (Underwood). 

 C. H. Lankester Collection: La Florida. 

 Carnegie Museum: Guapiles (Carriker & Crawford) ; Pozo Azul de Pirris, 



Cuabre, Guacimo, El Hogar, El Pozo de Terraba, Boruca, and Peralta 



(Carriker). Sixteen skins. 



This is the smallest and commonest of the Spade-billed Flycatchers 

 in Costa Rica, being found over the whole of the Caribbean and Pacific 

 slopes from sea-level up to about 2,000 feet, occasionally stragglers going 



