VIREONID^E — THE VIREOS. 359 



yellow. Wing, 3.20; tail, 2.25; bill, .42. Hah. Jamaica; Santo 

 Domingo, Porto Rico, Santa Cruz, St. Thomas, and Sombrero. 



var. calidris } 

 Light stripes of the head dingy grayish-white ; crown distinctly 

 ashy ; back grayish-olive ; crissum and lining of the wing scarcely 

 yellow. Wing, 3.20; tail, 2.35; bill, .42. Hah. Cuba, Bahamas, 



and South Florida var. hurbatul u s . 



h. A distinct dusky line along each side of crown. 



Colors as in barbatula, but "mustache" broader and more con- 

 spicuous, and crown much purer ash. Wing, 3.30 ; tail, 2.50 ; bill, 

 .48. Hah. Barbadoes ...... var. barbadense.* 



B. No " mustache." 



a. A dusky line along each side of crown. 



2. V. olivaceus. Grayish olive-green above ; beneath white, tinged 

 laterally with dull olive ; crissum and lining of wing scarcely yellow ; 

 inner edges of quills white. Eyes red. 



1. Wing, 3.30; tail, 2.40; bill, .38. Hab. Ea.stern Province of 

 North America, south to Northern South America . var. olivaceus. 



2. Wing, 2.50 ; tail, 1.80 ; bill, .33. Hab. Eastern South America. 



var. cliivi.^ 



3. V. flavoviridis. Yellowish olive-green above ; beneath white medi- 

 ally, bright greenish olive-yellow laterally ; crissum, lining of wings, and 

 inner edges of quills, light yellow. Eyes yeUow. 



1. Wing, 3.15 ; tail, 2..55 ; bill, .41. Hab. Middle America north of 

 Panama ........ \ii.r. flavoviridis. 



2. Wing, 2.80 ; tail, 2.25 ; bill, 36. Hab. South America, from 

 Buenos Ayres northward ; Gruatemala .... var. agilis.*' 



b. No dusky line on side of crown. 



4. V. magister.* Large. Above sooty-olive, more virescent posterior- 

 ly; crown without ashy tinge. Beneath similar, but lighter, whitish 

 medially. Crissum and lining of wing very faintly yellow ; inner edges 

 of quills white. Eyes ? Wing, 3.05 ; tail, 2.40 ; bill, .45. Hab. Hon- 

 duras (Belize). 



5. V. philadelphicus. Small. Above grayish-green ; crown ashy. 

 Beneath light yellow, deepest on the jugulum, whitish on belly. Eyes ? 

 Wing, 2.70; tail, 1.95; bill, .27. Hab. Eastern Province of North 

 America ; in winter south to Costa Rica. 



Series II. {A spurious primary.) 



C. No dusky line along side of crown. No " mustache." 



6. V. gilva. Eyes hazel (in all ?). 

 a. Crown nearly like the back. 



Above olive-gray, rump more virescent ; crown more ashy. Be- 

 neath dingy whitish, with a strong tinge of dingy buff from bill 



1 Fireosylvia calidris, Baird, Rev. Am. Birds, 1865, 329. {Motacilla calidris, L. Syst. Nat. 

 10th ed. 1758, 184.) 



2 v. calidris var. barbadense, Ridgway. 



3 V. olivacea var. chivi. Fireosylvia chivi, Baird, Rev. 327. {Sylvia chivi, Vieill. Nouv. 

 Diet. XI, 1817, 174.) 



* r. flavoviridis var. agilis. Vircosylvin agilLi, Baird, Rev. 338. {Laniiis agilis, Light. 

 Verz. Doubl., 1823, no. 526.) 

 s V. magistcr, Baird. 



