678 Annals of the Carnegie Museum. 



Scotothorus verce-pacis dumicola Ridgway, Birds N. and Mid. Amer., IV, 1907, 

 759 (British Honduras to Chiriqui. — Costa Rica: Angostura, Cervantes, 

 Valsa, Turrialba, Guapiles, Carrillo, Cariblanco de Sarapiqui, Jimenez, Pozo 

 Azul de Pirris, Volcan de Miravalles). — Bangs, Auk, XXIV, 1907, 303 

 (El Pozo de Terraba [Underwood]). 



Bangs Collection : Cariblanco de Sarapiqui, La Vijagua, Buenos Aires, 



and El General de Terraba (Underwood). 

 C. H. Lankester Collection : Tuis. 



Fleming Collection : Pozo Azul de Pirris and Carrillo (Underwood). 

 Carnegie Museum : Guapiles and Volcan de Turrialba, 2,000 feet 



(Carriker & Crawford), Pozo Azul de Pirris, Carrillo, El Hogar, 



Boruca (Carriker). Eleven skins. 



This manakin has a wide distribution in Costa Rica, occupying the 

 whole of the Caribbean and Pacific lowlands and slopes up to about 

 2,000 feet. It is most abundant on the Caribbean slope from the 

 Reventazon River northward along the foothills at an altitude of about 

 1,500 feet. It is found only in the heavy forest, and keeps on or 

 near the ground most of the time. It has a peculiar flitting flight, 

 hopping up suddenly and flitting off for a few yards and alighting on 

 or very near the ground. 



When Mr. Bangs separated the Chiriqui Scotothorus under the name 

 o( S. verce-pacis dumicola, he had but three specimens of the southern 

 bird for comparison with Mexican specimens, and these, unfortunately, 

 were rather unusually colored birds. Since that time much material 

 has been accumulated and it appears that the southern race is not a 

 stable one, there being a great amount of individual variation among 

 birds from all localities and that most of the birds in Chiriqui and 

 Costa Rica are dark like those from Guatemala, the type locality for the 

 species. There is, therefore, but one form of Scotothorus verce-pacis 

 in Central America, which must be known by the name here used. 



427. Corapipo altera altera (Hellmayr). 



Pipra leucotrhoa Salvin, P. Z. S., 1867, 149 (Tucurriqui, Costa Rica; descr. 

 of female). — Lawrence, Ann. Lye. N. Y., IX, 1868, 116, part (Cervantes 

 and Angostura). — Boucard, P. Z. S., 1878, 66 (Cervantes and Juan Vinas). 

 — Zeledon, An. Mus. Nac. de C. R., I, 1887, 118, part (Naranjo de Cartago 

 and Chirripo). — Sclater, Cat. Birds Brit. Mus., XIV, 1888, 301, part 

 (Angostura [Carmiol], Tucurriqui [Arce]). — Salvin and Godman, Biol. 

 Centr.-Am., Aves, II, 1890, in, part (Costa Rican references). — Cherrie, 

 Proc. U. S. Nat. Mus., XIV, 1891, 536 (description of female and young 

 male; Costa Rica). — Underwood, Ibis, 1896, 439 (Miravalles). 



