Carriker : List of the Birds of Costa Rica. 837 



to those of Tachyphonns delattrii, in that they associate in flocks of six 

 to twelve or more, and keep moving rapidly about in the undergrowth 

 in wet swampy places. They are also very noisy, have a rather harsh 

 note, and are shy and suspicious, flitting away precipitately when they 

 discover an intruder. 



654. Chlorospingus zeledoni Ridgway. 



Chlorospingus zeledoni Ridgway, Proc. Biol. Soc. Wash., XVIII, 1905, 211 

 (type, adult male, Volcan de Irazu, May 20, 1905 [R. Ridgway]; coll. U. S. 

 Nat. Mus.). — Bangs, Proc. New Eng. Zool. Club, III, 1908, 34 (Volcan de 

 Irazu [Underwood]). 



U. S. Nat. Museum: Volcan de Turrialba (Ridgway and Zeledon), eight 



skins. 

 Bangs Collection: Volcan de Irazii, large series; Volcan de Turrialba, 



one skin. 

 Carnegie Museum: Volcanoes de Irazu and Turrialba (Carriker). Three 



skins. 



It is very unusual that two such closely related species as C. pileatus 

 and C. zeledoni should occupy identically the same range and one remain 

 undiscovered for so long a period. To all appearances the birds are de- 

 cidedly distinct, with no signs of intergradation whatever. Whether or 

 not it is a case of the same bird having two color phases cannot be deter- 

 mined without a positive knowledge of their breeding, which would be 

 very difficult to obtain. 



655. Chlorospingus pileatus Salvin. 



Chlorospingus pileatus Salvin, P. Z. S., 1864, 581 (Volcan de Irazu, Costa Rica; 

 coll. Salvin and Godman). — Lawrence, Ann. Lye. N. Y., IX, 1868, 101 

 (Poas [J. Carmiol], Rancho Redondo [F. Carmiol]). — Salvin and Godman, 

 Biol. Centr.-Am., Aves, I, 1883, 316, pi. 22, fig. 2 (Volcan de Irazu [Rogers]). — 

 Ridgway, Proc. U. S. Nat. Mus., VI, 1883, 412 (Birris [J. Cooper]).— Sclater, 

 Cat. Birds Brit. Mus., XI, 1886, 241 (Volcan de Irazu [Arce and Rogers]). 

 — Zeledon, An. Mus. Nac. de C. R., I, 1887, no (Costa Rica). — Cherrie, 

 Proc. U. S. Nat. Mus., XIV, 1891, 531 (Volcan de Poas [Alfaro]; descr. of 

 young). — Ridgway, Birds N. and Mid. Amer., II, 1902, 165 (highlands of 

 Chiriqui and Costa Rica: Volcan de Irazu, Volcan de Poas, Rancho Redondo, 

 Birris). 



U. S. Nat. Museum: Volcan de Turrialba (Ridgway and Zeledon), San 

 Juan de Irazu (Ridgway and Alfaro), Las Vueltas de Dota (Basulto), 

 La Estrella de Cartago, Burgos de Irazu (Castro), Achiote de Poas 

 (Alfaro), Volcan de Barba (Underwood). 





