Carriker : List of the Birds of Costa Rica. 735 



feet in length, large in the centre and decreasing in size toward each end; 

 the entrance is on the side at the largest diameter, where the nest proper 

 is placed, this is very perfect in form; the number of eggs invariably laid 

 was two. The eggs appear small for the size of the bird; they measure, 

 axis, 13/16 in., diameter, 10/16 in.; the ground color is of a dull pale 

 reddish-white, marked for half the length with dull reddish-brown, lighter 

 at the end, which gives the appearance of a confused broad belt just back 

 of the broadest diameter; the smaller end is irregularly spotted and 

 streaked with the same color." 



507. Copurus leuconotus Lafresnaye. 



Copurus leuconotus Lafresnaye, Rev. Zool. 1842, 335. — Lawrence, Ann. 

 Lye. N. Y., IX, 1868, no (San Jose and Pacuare [J. Carmiol]). — Frant- 

 zius, Jour. fiirOrn., 1869, 306 (Turrialba). — Sclater, Cat. Birds Brit. Mus., 

 XIV, 1888, 51 (Tucurriqui [Arce], San Jose [Carmiol]). — Salvin and God- 

 man, Biol. Centr.-Am., Aves, II, 1888, 4. — Ridgway, Birds N. and Mid. Am., 

 IV, 1907, 351 (southern Honduras to Cayenne; — Costa Rica: Rio Frio, 

 Talamanca, Jimenez, Pacuare, Tucurriqui, Turrialba, Carrillo, Bonilla, and 

 San Jose). 



U. S. Nat. Museum: Guayabo (Ridgway and Zeledon). 



Bangs Collection: Carrillo (Underwood). 



C. H. Lankester Collection: Guacimo and Sarapiqui. 



Carnegie Museum: Guapiles (Carriker & Crawford); Guacimo, Rio 



Sicsola, El Hogar (Carriker). Twelve skins. 



This curious little flycatcher is confined almost entirely to the Caribbean 

 slope, from near sea-level up to about 2,000 feet in comparative abundance, 

 occasionally straggling to higher altitudes. Lawrence records a bird from 

 San Jose, but I think this a very doubtful record, some mistake having 

 been made in the labelling of the specimen. The birds frequent the edge 

 of clearings, open woodland, and the edges of streams. They are always 

 to be seen around the new clearings on the banana-plantations, where 

 many broken off stubs are left, containing old woodpecker holes, in which 

 this bird builds its nest. I noted many such nests, but always in an old 

 stub so slender and rotten that to climb it was an impossibility. The 

 birds are always seen in pairs, usually perched on some broken stump or 

 limb, and catch their food on the wing like Tyrannies and Myiarchus. 



