608 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult female in autumn and winter. — Similar to the spring and sum- 

 mer plumage, but plumage softer and colors more blended. 



Iiii mature male infiri^t autumn and winter. — Similar to the adult male 

 of corresponding season, but concealed chestnut spots on back smaller; 

 tips of middle wing-coverts duller pale yellowish olive; olive-green of 

 head more or less tinged with gray; black markings on sides of head 

 much less distinct; black streaks on sides and flanks narrower, and 

 mandible pale brownish (dull flesh color in life?), with darker tip. 



Immature female infird autumn and winter. — Similar to the adult 

 female of corresponding season, but duller clive-green above; pattern 

 of sides of head indistinct or obsolete, and streaks along sides and flanks 

 still less distinct, sometimes obsolete. 



Young female, first plumage. — Above plain hair brown or grayish 

 broccoli brown; remiges and rectrices dusky, with pale yellowish gray 

 edgings; middle and greater wing-coverts tipped with pale buffy, pro- 

 ducing two narrow bars across wing; sides of head plain pale hair 

 brown, relieved by a small and narrow spot of duUyellowish white on 

 each eyelid; chin, throat, and chest pale hair brown; rest of under 

 parts dull yellowish white, or pale dull primrose yellow, the breast 

 narrowly streaked with hair brown. 



Adult wiaZe.— Length (skins), 105-117 (111); wing, 55.5-59 (57.6); 

 tail, 46-50 (17. 8) ; exposed culmen , 8. 8-10 (9. 4) ; tarsus, 17. 5-19. 5 (18. 3).' 



Adult female.— Length (skins), 100-111 (105); wing, 51-57 (541); 

 tail, 41-50 (44.3); exposed culmen, 9-10 (9.2); tarsus, 17.5-19 (IS).'' 



^ Ten specimens, from Atlantic coast district of United States. 



^ Eight specimens, from Atlantic coast district of United States. 



The specimens measured from the Atlantic States compare in average measuremente 

 with those from the Mississippi Valley and others from the Bahamas (the latter 

 evidently resident birds), as follows: 



Specimens from the islands of Abaco, New Providence, and Green Cay, and part 

 of those from Bum Cay, Bahamas, evidently represent resident birds, since they dif- 

 fer from all examples from the United States in decidedly larger bill and much 

 broader yellov/ superciliary stripe, the latter encroaching anteriorly on the sides of 

 the forehead. Specimens from other Bahama islands, including most of those exam- 

 ined from Rum Cay, are not distinguishable from United States examples, and with- 

 out much doubt are winter visitors from the latter country. Until more is known 

 of the Bahama resident birds, however, I do not venture to separate them sub- 

 speciflcally. 



