480 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



d. Middle wing-coverts without distinct, if any, white tips; flanks yellow. 

 e. Darker and more richly colored; pileum, hindneck, rump, etc., dull 

 indigo blue; throat and chest rich orange-ochraceoua or orange-tawny; 

 white tips to greater wing-coverts more distinct. (Nicaragua to Isthmus 



of Panaroa.) Compsothlypis pitiayumi speciosa, adults (p. 487) 



ee. Paler; pileum, hindneck, rump, etc., bluish slate-color; throat and chest 

 gamboge yellow, sometimes slightly tinged with orange-ochraceous; 

 white tips to greater wing-coverts less distinct, sometimes obsolete. 

 (Guatemala; State of Chiapas, southern Mexico.) 



Compsothlypis pitiayumi inornata, adults (p. 488) 



dd: Middle wing-coverts broadly tipped with white^; flanks not yellow. 



e. Tail not more than 43.9, tarsus not more than 16; wing averaging not 



more than 54.6 in male, nor more than 51.8 in female; flanks dull 



whitish, slightly if at all tinged with either grayish or rusty brownish. 



/. Smaller (wing averaging 51.6 in male, 47 in female; tail averaging 39.9 



in male, 35.3 in female); less white on wing-coverts, that on greater 



coverts occupying less than exposed terminal half; flanks paler, dull 



white, slightly if at all tinged with gray or rusty. (Eastern Mexico 



and southern Texas. ) . .Compsothlypis pitiayumi nigrilora, adults (p. 490) 



ff. Larger (wing averaging 54.6 in male, 51.8 in female; tail averaging 40.9 



in male, 39. 6 in female ) ; more white on wing-coverts, that on greater 



coverts extending nearly to tips of middle coverts; flanks darker, more 



or less tinged with gray or rusty, or both. (Western Mexico.) 



Compsothlypis pitiayumi pulchra, adults (p. 491) 

 ee. Tail not less than 46.5, tarsus not less than 18.5; wing averaging 57.4 in 

 male, 54.6 in female; flanks deep grayish, strongly tinged with rusty 

 brownish. (Tres Marias Islands, western Mexico.) 



Compaothlypis pitiayumi insularis, adults (p. 492) 

 (J. Lores and suborbital region grayish, flecked with whitish or pale yellowish; 

 white subterminal spot on inner webs of lateral rectrices smaller, not sharply 

 defined, sometimes obsolete; posterior under parts pale yellowish, the flanks 

 shaded with olive; colors much duller, the adult male dull gray (often 

 tinged with olive) above, and with yellow of under parts not deeper on 

 chest. (Socorro Island, northwestern Mexico.) 



Compsothlypis graysoni, adults (p. 492) 

 aa. Throat and breast whitish or pale grayish; back brownish gray or grayish olive. 

 (Young. ) 

 /). Wing with two white bands. 

 c. Chest and sides of breast distinctly gray. 



Compsothlypis americana americana, young (p. 482) 

 cc. Chest and sides of breast not distinctly gray (scarcely different in color from 



other lower parts) Compsothlypis pitiayumi pulchra, young ^ (p. 490) 



bb. Wing without any white bands. 



Compsothlypis pitiayumi inornata, young' (p. 488) 



' In this character agreeing with the South American V. p. pitiayumi, in which, 

 however, the flanks are yellow, as in the two Central American forms, C. p. speaom 

 and C. p. inornata. Specimens from the Isthmus of Tehuantepec (Atlantic side) are 

 of intermediate character, in fact are intergrades between C. p.inomaia and C.p. 

 nigrilora. 

 ^ Young of C. p. nigrilora, C. p. irmdaris, C. p. specioaa, and C. graysoni not seen, 



