382 



NORTH AMERICAN BIRDS. 



Subgenus VIREO, Vieill. 

 Vireo, Yieill, Ois. Am. Sept. I, 1807, 83. (Type, Muscicajja noveboracensis, Gm.) 

 Char. Wings short and rounded, a little longer than the tail, equal to it, or shorter. 



Vireo noveboracensis. 



First primary distinct and large, from two fifths to half or more the length of the second, 

 shorter or not longer than the eighth. 



The characters of Vireo are essentially 

 those of Vireosylvia ; the bill, however, is 

 shorter ; the first quill always present, better 

 developed, sometimes more than half the 

 second. The wings are shorter, and more 

 rounded; the tarsi usually longer. The. 

 Vireo noveboracensis. scctlons are as follows : — 



Vireo. Wings pointed ; first quill less than half the second, which is about equal 

 to seventh or eighth, and decidedly longer than the tenth primary and the secondaries. 

 Type, V. noveboracensis. 



Vireonella. Wings rounded, scarcely longer than the tail ; the first quill half as long 

 as the second (or more than half), which is not longer than the tenth primary and secon- 

 daries, or even less. Bill and feet generally much stouter than the preceding. Type, V. 

 gundlachi. 



None of the species of Vireonella are found in the United States. 



Species. 



Common Characters. All the species olivaceous or ashy above, beneath whit- 

 ish, or olivaceous-yellow. Wings with light bands. A light stripe from bill 

 over the eye, but not beyond it, except in carviioli. Iris brown, as far as known, 

 except in V. novehoracensis, where it is Avhite. 

 A. Two conspicuous light bands on wing. 

 a. Sexes different. Whole lore white. 



1. V. atricapillus. Above olive-green, outer edges of tail-feathers 

 bright 3'ellowish -green ; wing-bands greenish-white. Sides oliva- 

 ceous-yellow. Male. Head and neck (except lore, orbital ring, chin, 

 and throat) deep black ; lower parts pure white medially. Female 

 with the black replaced by dull slate ; lower parts ochraceous-white 

 medially. Wing, 2.30; tail, 1.80; tarsus, .68; bill, from nostril, 

 .24. Hah. Southern Texas ; Mazatlan, Mexico. 

 5. Sexes alike. Lore dusky, with light mark above it. 



