156 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 



The females vary as much as the males. The fully adult female usually has 

 some rufous chestnut in the crown, but the amount of this color is very vari- 

 able, and a few, apparently fully adult, have none of it. The shade of yellow 

 of the under parts and the amount of streaking below vary as in the males. 



In the immature plumage, in both sexes, the belly and sides are dull whitish, 

 the throat and chest yellowish, and the back and head much mixed with gray. 

 No specimens were taken in nestling plumage, nor probably wholly in the sec- 

 ond stage, in which the back and head would undoul)ted]y be wholly gray. 



The species was common in mangrove swamps bordering the islands, much 

 more so than in the mangroves near the city of Panama. 



*72. Dendroica coronata (Linne). 

 One female, San Miguel Island, February 23. 



* 73- Dendroica rara (Wilson). 

 One female, San Miguel Island, March 15. 



*74. Dendroica blackburniae (Gmel.). 

 Two males, Saboga Island, April 4 and 11. 



*75. Dendroica castanea (Wilson). 



Two males, San Miguel Island, March 6, and Saboga Island, April 3. 



The specimen taken March 6 is in the midst of the spring moult, changing 

 everywhere from autumn to spring plumage ; the one taken April 3 has nearly, 

 if not quite, completed the moult to its summer dress. 



*76. Seiurus motacilla (Vieill.). 



One female, San Miguel Island, March 18. 



*77. Seiurus noveboracensis noveboracensis (Gmel.). 



Three specimens, one male, two females, San Miguel Island, February 24 and 

 March 8, and Saboga Island, April 9. 



*78. Wilsonia canadensis (Linne). 

 One (female ?) specimen, Saboga Island, April 4. 



*79. Setophaga ruticilla (Linni?). 

 One female, San Miguel Island, March 2. 



