244 D WIGHT 



Female. The sexes are alike, although the female is apt to 

 be of a paler yellow and the moults correspond. 



Helinaia swainsonii Aud. SWAINSON'S WARBLER 



1. NATAL DOWN. No specimen seen. 



2. JUVENAL PLUMAGE acquired by a complete postnatal moult. 



Above, including wing coverts, pale cinnamon-brown. Below, paler cinnamon. 

 Wings and tail olive- brown edged with olive-green. Crown with two indistinct 

 lateral stripes pale brownish gray. A dusky transocular streak. Bill and feet 

 pale pinkish buff. Scarcely differs from Helmitherus vermivorus but rather 

 paler. 



3. FIRST WINTER PLUMAGE acquired by a partial postjuvenal 

 moult which involves the body plumage and wing coverts but 

 not the remiges nor rectrices. Young and old become prac- 

 tically indistinguishable. 



Above, bistre, greener on the back. Below, yellowish white, shading to olive-buff 

 on sides and flanks. Superciliary line indistinctly white ; a dusky line through 

 the eye. 



4. FIRST NUPTIAL PLUMAGE acquired by wear. The head 

 becomes Mars-brown in contrast to the olive back, and below the 

 plumage is somewhat paler. 



5. ADULT WINTER PLUMAGE acquired by a complete post- 

 nuptial moult. Practically indistinguishable from first winter 

 dress. 



6. ADULT NUPTIAL PLUMAGE acquired by wear as in the 

 young bird. 



Female. The moults and plumages correspond to those of 

 the male, and females are hardly distinguishable except by a 

 duller line through the eye. 



Helmitherus vermivorus (GmeL). WORM-EATING WARBLER 



1. NATAL DOWN. Brownish mouse-gray. 



2. JUVENAL PLUMAGE acquired by a complete postnatal moult. 



Whole body plumage and the wing coverts cinnamon, palest on the abdomen. 

 Wings and tail olive-brown edged with olive-green. Two indistinct lateral 



