838 Annals of the Carnegie Museum. 



Bangs Collection: Volcan de Irazu, Azahar de Cartago, Volcan de Poas, 



Cariblanco de Sarapiqui (Underwood). 

 Carnegie Museum: Volcan de Irazu, Volcan de Turrialba, Ujurras de 



Terraba (Carriker). Five skins. 



This species is easily distinguished from the three following by the white 

 superciliary stripe. It is confined to the high mountains of the interior 

 and is seldom seen below 7,000 feet. There is a skin in Mr. Bangs' col- 

 lection labelled Cariblanco de Sarapiqui, by Underwood, the authenticity 

 of which I doubt very much. It is a rare occurrence to take C. novicius 

 regionalis as low as Cariblanco, and that species is rarely found as high 

 as C. pileatus, so that there is much room for doubt concerning this locality. 

 It is especially abundant just below timber-line on the high volcanoes, 

 but is also found in the higher parts of the Dota Mountains and the 

 Talamanca Cordillera. 



They associate in flocks of from five or six to fifteen or twenty, and 

 utter a soft, lisping, musical note, as they move along from branch to 

 branch through the forest. 



656. Chlorospingus olivaceiceps Underwood. 



Chlorospingus olivaceiceps Underwood, Ibis, 1898, 612 (Carrillo, Nov. 24, 1897 

 [C. F. Underwood]). — Ridgway, Birds N. and Mid. Amer., II, 1902, 166 

 (eastern Costa Rica: Carrillo). 



U. S. Nat. Museum: Guayabo, March, 1908, four males (Ridgway and 



Zeledon). 

 Bangs Collection: Carrillo, one adult male (Underwood), Nov. 3, 1898. 

 Carnegie Museum: Volcan de Turrialba, 2,000 feet, April 17, 1903, female 



(Carriker & Crawford). 



This is one of the very rare tanagers of Costa Rica, but seven specimens 

 of it being in existence, including the type. It is, apparently, confined 

 to the Caribbean foot-hills, from an altitude of about 1,000 up to 2,000 

 or 2,500 feet, inhabiting the heavy damp forests found in that region. 

 There are no records for the birds south of the Reventazon Valley, nor 

 north of Carrillo, on the Rio Siicio, nor did Underwood get it at La Vijagua 

 in 1908. It seems to be one of those extremely local forms which are so 

 numerous in Central America, and which are encountered here and there, 

 far from any nearly related species. Underwood's description of this 

 bird is very meagre, so that a full description of it will not come amiss. 



Male. — Pileum, back, rump and upper tail-coverts, and wing-coverts, 

 uniform olive-green; remiges and rectrices grayish-sooty, broadly edged 



