BIRDS OF NOETH AND MIDDLE AMERICA. 161 



VIREOSYLVA JOSEPHS CHIRIQUENSIS Bangs. 

 OHIRIQ¥I VIREO, 



Similar to V. j. costaricensis but much grayer above, the pileum and 

 hindneck dark hair brown" instead of deep sooty brown, the back, etc., 

 grayish olive or dull grayish olive-green instead of bright brownish 

 olive-green, superciliarj'^ stripe more extensively grayish posteriorly, 

 brownish postocular streak grayer and less distinct, and yellow of 

 under parts decidedly paler. 



Adult maZe.— Length (skins), 110-116 (111.6); wing, 63-67 (64.9); 

 tail, 46^9 (47.4); exposed culmen, 10-11 (10.4); tarsus, 17-18 (17.3); 

 middle toe, 10-10.5 (10.1).* 



Adult female. — Length (skin), 110; wing, 63.5; tail, 45.6; exposed 

 culmen, 11; tarsus, 17; middle toe, 10." 



Chiriqui (Boquete, etc.), and southward along Caribbean coast slope 

 of Colombia to province of Santa Marta (Paramo de Macotama). 



This form agrees very closely in coloration of the upper parts with 

 V. amauronota, the color of the pileum being sometimes quite identical 

 but usually grayer (instead of browner, as in the Costa Rican form), 

 but the back is a lighter olive-greenish color. The coloration of the 

 under parts is conspicuously different, however, only the chin and 

 throat being whitish, the rest of the under surface entirely pale yellow, 

 as in the Costa Rican form. 



Vireo josephee (not of Sclater, 1859) Salvin and Godman, Biol. Centr.-Am., 

 Aves, i, 1881, 194, part (Volcan de Chiriqui). — Gadow, Cat. Birds Brit. 

 Mns., viii, 1883, 297, part ("Panama").— Bangs, Proc. Biol. Soc. W^sh., 

 xiii, 1899, 105 (Paramo de Macotama, prov. Santa Marta, Colombia, 11,000 

 ft. alt.); Proc. New Engl. Zool. Club, iii, 1902, 58 (Boquete and Caribbean 

 slope of Volcan de Chiriqui, 4,000 to 7,000 ft.). — Allbn, Bull. Am. Mus. 

 N. H., xiii, 1900, 172. (Valparaiso, etc., prov. Santa Marta, Colombia). 



[ Vireosylma] josephss Sclatee and Salvin, Nom. A v. Neotr. , 1873, 12, part. 



Vireosylva josephx chiriquenm Bangs, Proc. New Engl. Zool. Club, iv, Mar. 24, 

 1903, 9 (Boquete,' Chiriqui, 4,000 ft. alt.; coll. E. A. and O. Bangs). 



Genus LANIVIRKO Baird. 



Lanwireo Baird, Rep. Pacific R. R. Surv., ix, 1858, 329; Review Am. Birds, 



May, 1866, 326, 345. (Type, Vireo flavifrons Vieillot.) 

 Laniovireo (emendation) Gray, Hand-list Birds, i, 1869, 381. 



Medium-sized Vireonidee with tenth primary rudimentary and con- 

 cealed or else not more than one-third as long as ninth, narrow and 

 pointed (as in Vireosylva), the ninth primary longer than fourth (as in 

 Vireosylva), butwith depth of bill at frontal antise eqiial to much more 



« The color of the pileum is visibly darker along the lateral edge, sometimes form- 

 ing a rather distinct marginal line. 

 * EiVe specimens. 

 " One specimen. 



10384-^voL 3—03 11 



