176 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Vireo solitarius cassinii Bryant, Proc. Calif. Acad. Sci., 2d ser., ii, 1889, 307 

 (San Jos6 del Cabo, breeding; Miraflores). 



Vireo solUarius lucasanus Brewster, JDescr. Seven Supposed New N. Am. Birds, 

 Feb. 17, 1891, 147; Auk, viii, April, 1891, 147 (San Jos6 del Eancho, Lower 

 California; coll. W. Brewster); Bull. Mus. Comp. Zool, xli, 1902, 174 (San 

 Jose del Cabo, San Jos^ del Eancho, Miraflores, etc., breeding; descr. nest 

 and eggs). — American Ornithologists' Union, Check List, 2d ed., 1895, 

 no. 629(i.— BiDQWAY, Man. N. Am. Birds, 2d ed., 1896, 607. 



[ Vireo solitarius] var. lucaaana Dubois, Synop. Avium, fasc. vii, 1901, 472. 



Genus VIRKO Vieillot. 



Vireo Vieillot, Gis. Am. Sept., i, 1807, 83. (Type, V. musicMS Vieillot, =3fit«ci- 



capa noveboracensis Gmelin. ) 

 Vireonella Baird, Review Am. Birds, May, 1866, 326, 369. (Type, Vireo gund- 



lachii Lembeye. ) 



Small Vireonidse with the tenth primary well developed, more than 

 one-third (frequently one-half) as long as ninth, the latter shorter than 

 fourth, sometimes shorter than the first or (rarely) even shorter 

 than secondaries; wing tip shorter than commissure, the latter shorter 

 than tarsus. 



Bill variable in relative size but never with exposed culmen more 

 than two-thirds as long as tarsus nor more than distance from nos- 

 tril to posterior angle of eye, sometimes less than half as long as 

 tarsus and less than distance from nostril to anterior angle of eye; 

 culmen nearly straight or very slightly curved for most of its length 

 but strongly decurved terminally, the tip ol maxilla more or less 

 distinctly though minutely uncinate; gonys nearly or quite as long 

 as distance from nostril to tip of maxilla, distinctly convex, ascend- 

 ing terminally, the tip of the maxilla produced into a fine point;" 

 maxillary tomium straight or very nearly so, distinctlv notched sub- 

 terminally; the straight or nearly straight mandibular tomium with 

 a corresponding but much smaller (sometimes* obsolete) notch; depth 

 of bill at frontal antise about equal to, sometimes, slightly less than, its 

 width at same point. Nostril exposed, at least mostly so, longitu- 

 dinal, broadly oval or ovate, in lower anterior portion of nasal fossae, 

 posteriorly usually in contact with bristly feathers of the frontal antise, 

 sometjmes partly covered by the latter. Rictal bristles few, only two 

 to three well developed; feathers of frontal antise and chin with well- 

 developed bristles at tips, the former extending beyond nostrils. 

 Wing moderate, more or less pointed; tenth primary decidedly less 

 to slightly more than half as long as ninth, usually broad with rounded 

 tip, rarely narrower and more pointed; ninth primary always shorter 

 than fifth, sometimes shorter than first; eighth to fourth (usually 

 seventh, sixth, and fifth) longest; wing-tip much shorter than tarsus, 

 sometimes shorter than exposed culmen. Tail shorter than wing (the 



" This very indistinct in V. iellii. * In F. bellii. 



