176 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



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

 (San Jos6 del Cabo, breeding; Mirafloree). 



Vireo solitarms lucasanns Brewster, Descr. Seven Supposed New N. Am. Birds, 

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

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

 Jose del Cabo, San Jose del Rancho, Mirafiores, etc., breeding; descr. nest 

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

 no. 629c;.— RiDGWAY, Man. N. Am. Birds, 2d ed., 1896, 607. 



\_Vireo solitarius] var. lucasana Dubois, Synop. Avium, fasc. vii, 1901, 472. 



Genus VIREO Vieillot. 



Vireo Vieillot, Ois. Am. Sept., i, 1807, 83. (Type, V. music>isYie[\\ot,=Miisci- 



capa noveboracensis Gmelin. ) 

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



Jachii Lembeye. ) 



Small Vireonida? 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 of maxilla more or less 

 distinctly though minutely uncinate; gonys nearl}^ or quite as long 

 as distance from nostril to tip of maxilla, distinctl}^ convex, ascend- 

 ing terminall}^ the tip of the maxilla produced into a fine point; '^ 

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

 terminally; the straight or nearly straight mandibular tomium with 

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

 of bill at frontal antife 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 antite, 

 sometimes partly covered by the latter. Rictal l)ristles few, onl}^ two 

 to three well developed; feathers of frontal antias 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, usuallv broad with rounded 

 tip, rarel}^ narrower and more pointed; ninth primary alwa3"S 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 w ing (the 



«This very indistinct in V. bellii. ''In V. bellii. 



