Carriker : List of the Birds of Costa Rica. 673 



unless they were sent to Europe (which is doubtful) Underwood has 

 never taken the bird in Costa Rica. The only Costa Rican specimens 

 of which I have any knowledge are the two types, collected by F. 

 Carmiol at Barranca and Dota, and the two specimens in the collec- 

 tion of the Carnegie Museum (cited above). These four birds came 

 from very widely separated regions, from 1,200 feet to at least 4,000 

 feet above sea-level, so that we may infer that the bird is found over 

 the whole of the more sub-tropical portions of the country, wherever 

 there are heavy, humid forests, but apparently in very small numbers. 



418. Microtriccus brunneicapillus (Lawrence). 



Tyrannulas brunneicapillus Lawrence, Ibis, 1862, 12 (Panama); Ann. Lye. 

 N. Y., IX, 1868, in (Angostura [J. Carmiol]). — Frantzius, Jour, f iir Orn., 

 1869, 307 (Costa Rica). — Sclater, Cat. Birds Brit. Mus., XIV, 1888, 129 

 (Panama, a somewhat doubtful species). — Salvin and Godman, Biol. 

 Centr.-Am., Aves, II, 1888, 32 (Costa Rican reference). 



Microtriccus semiflavus brunneicapillus Ridgway, Proc. Biol. Soc. Wash., XVIII, 

 1905, 310. 



Microtriccus brunneicapillus Ridgway, Birds N. and Mid. Amer., IV, 1907, 792 

 (Costa Rica, Panama, and northwestern Ecuador. — Costa Rica: Angos- 

 tura, Jimenez). Two skins. 



U. S. Nat. Museum: Jimenez, 1890 (?) (Cherrie) ; Feb. 11, 1891, 



9 (Underwood) ; July 5, 1892 (Verrill). 

 Bangs Collection : Jimenez, July 6, 1892 (Underwood). 

 Carnegie Museum : Guacimo, Dec. 24, 1903 ; El Hogar, March 26, 



1907 (Carriker). Two skins. 



Apparently confined to the lowlands of the Caribbean, below 1,500 

 feet. With the exception of the single specimen taken at Angostura 

 (on the Reventazon River at about 1,500 feet) all the Costa Rican 

 birds have been taken within a radius of not more than three miles of 

 Jimenez, in the Santa Clara Valley, in the northeastern part of the 

 country, and at an altitude of about 700 feet. Both of the birds 

 which I took were secured in small semi-open spots in the forest beside 

 little creeks. The specimen taken at El Hogar was pecking at some 

 insect in a decayed knot-hole on the side of a small tree-trunk. It is 

 certainly a very rare bird in Costa Rica. 



419. Microtriccus semiflavus (Sclater and Salvin). 



Tyrannulus semiflavus Sclater and Salvin, P. Z. S., i860, 300 (Choctum, Vera 

 Paz, Guatemala; coll. Salvin and Godman). — Sclater, Cat. Birds Brit. 

 Mus., XIV, 1888, 129 (Guatemala). — Salvin and Godman, Biol. Centr.- 

 Am., Aves, II, 1888, 32 (Mexico to Nicaragua). 



