BIRDS FROM COSTA RICA—WETMORE 1 
Rica. From the mountains included in the Cordillera de Talamanca 
in the southern half of the country down into western Panamé the 
birds are distinctly paler, more yellow below. SBaird’s type of auran- 
tiacus from Dota, and a series secured by Zeledén and Ridgway from 
Santa Maria de Dota, Lagunaria and Copey, are of this hghter yellow 
group. Specimens from Chiriqui are identical with them, and so 
acceptus of Bangs becomes a synonym of aurantiacus. 
To the north of the depression through which the railroad line 
crosses through Siquirres on the route from Puerto Limén to San 
José, and from there descends toward Puntarenas on the west coast, 
through the mountains of the Cordillera Central and the Cordillera 
de Guanacaste, these warblers are darker, more orange below. J. L. 
Peters writes me that Bangs apparently had available skins from 
Tenorio and Cerro Santa Maria when he described acceptus, so that 
actually he was comparing his birds from Chiriqui with the form that 
I have here named comptus. Specimens from above Cartago and 
Grecia are somewhat intermediate, but are nearer comptus. | 
These warblers were found in the heavy forest of the Cerro Santa 
Maria above the Hacienda ranging from about 900 meters elevation 
to the summit. ‘They were seen in the lower branches of the trees, 
or in the tndergrowth near the forest floor, and were rather shy. 
The two taken J shot on November 10 and 14. 
BASILEUTERUS CULICIVORUS CULICIVORUS (Lichtenstein) 
Sylvia culicivora LicHTENSTEIN, Preis-Verzeichniss Saugethiere, Végel ... in 
Mexico, 18380, p. 2 (Jalapa, Veracruz). 
At the Hacienda Santa Maria these warblers were fairly common 
in heavy forest. I took specimens on November 5, 7, 8, and 9, finding 
the birds usually in dense cover among the lower branches of the 
trees, where they moved actively and scolded at me. 
The five skins agree with examples from Guatemala to southern 
México, as do three others in the National Museum from Guanacaste, 
the latter having been taken by C. F. Underwood at Tenorio on Janu- 
ary 28 and February 7 and 10, 1910. As other writers have noted, 
specimens from northern and central Costa Rica are intermediate 
between culicivorus and godmani, being placed with the latter. Two 
skins from Guayabo are identical with specimens from Chiriqui, being 
decidedly more yellow green above than a series from farther west. 
BASILEUTERUS DELATRII DELATRII Bonaparte 
Basileuterus delatrii BONAPARTE, Compt. Rend. Acad. Sci. Paris, vol. 38, 1854, 
p. 383 (Nicaragua). 
October 25 while following the Rio Liberia above the town of Li- 
beria I secured three of these active warblers in tangled growth near 
