400 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



/(/(. Larger, especially the bill (exposed culmen 13.2-15.2); back and 

 wings darker, more blackish. (Islands of Porto Rico, Vieques, 

 St. Thomas, St. Johns, Culebra (?), Anegada (?) and Tortola (?) , 



Greater Antilles. ) Coereba portoricensis, adults (p. 412) 



gg. Throat blackish slate. 



/(. White wing-spot not truncated posteriorly, Init following edges of 

 primaries more or less beyond it; rump-patch clear yellow, larger 

 and sharply defined; breast darker and duller yellow (wax yel- 

 low). (Island of Jamaica, Greater Antilles.) 



, Coereba flaveola-, adults (p. 414) 



hh. White wing-spot (if present) truncated posteriorly; rump-patch 

 decidedly olivaceous or olive-yellowish, smaller and less sharply 

 defined; breast lighter and clearer yellow. 

 ?'. White wing-spot larger; breast tinged with ochraceous. (Island 

 of St. Croix, Greater Antilles.). .Coereba newtoni, adults (p. 416) 

 a. White wing-spot smaller, sometimes obsolete or altogether want- 

 ing; breast clear yellow like abdomen. 

 j. White superciliary stripe broader; white wing-spot larger; 

 smaller (wing of female 56.1-56.6, tail 34.3-34.8). (Islands 

 of St. Vincent and Grenada, Lesser Antilles.) 



Coereba saccharina, adults (p. 415) 

 jj. White superciliary stripe narrower; white wing-spot (if pres- 

 ent) much smaller; larger (wing of female 56.9-58.4, tail 

 39.4-40.1). 

 k. No white at base of primaries (except concealed by primary 

 coverts); smaller (wing of male averaging 58.2, tail 40.4, 

 exposed culmen 14). (Islands of Dominica, Guadeloupe, 

 St. Christopher, Nevis, Barbuda and Antigua, Lesser 



Antilles.) Coereba dominicana, adults (p. 417) 



kk. A white spot at base of primaries; larger (wing of male 

 averaging 58.9, tail 41.1, exposed culmen 14.2). (Islands 

 of St. Bartholomew, Saba, and St. Eustatius, Lesser 



Antilles.) Coereba bartolemica, adults (p. 419) 



dd. Throat bicolored (black and white — at least the lower portion being the 

 latter color); malar region and sides of throat black, like piieum. 

 e. Throat blackish anteriorly as well as laterally; a gray rictal streak. 

 /. White superciliary stripe shorter, terminating above end of auricular 

 region; whitish space on lower throat much smaller; gray rictal streak 

 more distinct; olive-yellowish band across lower rump indistinct. 

 (Island of Barbados, Lesser Antilles. ) 



Coereba barbadensis, adults (p. 420) 



ff. White superciliary stripe longer, terminating behind auricular region; 



whitish space on lower throat much larger; gray rictal streak less 



distinct; olive-yellowish band across lower rump much more distinct. 



(Island of Curasao, Caribbean Sea.) 



Coereba uropygialia, adults (p. 420) 

 ee. Thioat blackish only laterally; no gray rictal streak. (Islands of Mar- 

 tinique and Santa Lucia, Lesser Antilles.) 



Coereba martinicana, adults (p. 421) 

 cc. Superciliary stripe l)right yellow. 



Coereba martinicana and C. uropygialis, young' (p. 421) 



' I have not seen a specimen of C. martinicana in first plumage; but in that species 

 younger birds retain the yellow superciliary stripe, at least in part, after the other- 

 wise fully adult plumage has been acquired. 



