772 Annals of the Carnegie Museum. 



America," Mr. Ridgway had seen no specimens of Cistothorus from Costa 

 Rica, hence could not be certain that they were referable to this form. 

 I have compared a large series of Costa Rican skins with the type of C. I. 

 lucidus from Boquete, and find them exactly the same. 



The bird is found in only a few places in Costa Rica, but is abundant 

 wherever it occurs. It makes its home in the grassy marshes which are 

 found in the vicinity of La Estrella and Azahar de Cartago at an altitude 

 of about 5,000 feet. It has all the habits of the Marsh Wrens of North 

 America, hence no reference is necessary to them. 



Family CORVID.E. 

 555. Cyanolyca cucullata (Ridgway). 



Cyanocitta ornala Salvin, Ibis, 1870, 114 (Costa Rica). — Zeledon, Cat. Aves 

 de C. R., 1882. 10. 



Cyanocorax cucullatus Ridgway, Proc. U. S. Nat. Mus., VIII, 1885, 23 (Na- 

 varro, Costa Rica, Oct. 30, 1882 [J. Cooper]; coll. U. S. Nat. Mus.). — 

 Zeledon, An. Mus. Nac. de C. R., I, 1887, 113 (El Zarcero de Alajuela and 

 Rio Sucio). 



Cyanolyca cucullata Salvin and Godman, Biol. Centr.-Am., Aves, I, 1887, 127 

 (Costa Rican references). — Ridgway, Birds N. and Mid. Amer., Ill, 1904, 

 323 (Isthmus of Panama to Costa Rica: Navarro, Rio Siicio, and El Zarcero 

 de Alajuela, etc.). 



U. S. Nat. Museum: La Lagunaria de Dota (Basulto). 

 Bangs Collection: La Hondura and Cariblanco de Sarapiqui (Underwood). 

 C. H. Lankester Collection: Cariblanco de Sarapiqui. 

 Carnegie Museum: La Hondura, six specimens (Carriker), Carrillo (Un- 

 derwood). Two specimens. 



This species is found over the Caribbean slope from about 1,500 up to 

 4,000 feet, and in some places on the central plateau region at about 4,000 

 feet. I secured a small series at La Hondura, while in the Carnegie Mu- 

 seum are two skins from Carrillo, collected by Underwood. I do not 

 think the bird is common at so low an altitude as Carrillo, but as a whole 

 its range is lower than that of the succeeding species, though their ranges 

 do overlap to a considerable extent. Like the succeeding species it is 

 confined to the heavy dark forests, and goes about in small flocks, although 

 it is rather quiet. 



556. Cyanolyca argentigula (Lawrence). 



Cyanocitta argentigula Lawrence, Ann. Lye. N. Y., XI, 1875, 88 (Talamanca, 



Costa Rica; coll. U. S. Nat. Mu?.). — Sclater and Salvin, P. Z. S., 1876, 

 268 (critical). 



