484 BIRDS FROM NICARAGUA AND COSTA RICA — RICHMOND. 

 15. Helmiiiihophila peregrina (Wils.). 



Shot a specimen on the Escondido October 24; two days later the 

 species had become abundant, hundreds passing by in an almost con- 

 tinuous stream, pausing an instant in the trees in front of the house, 

 then off again, following the course of the river westward. This migra- 

 tion continued until the L*9th, after which date no more were observed. 



16. Compsothlypis americana (Liuii.). 



One specimen, in corai)any with some Tennessee Warblers, shot Octo- 

 ber 2(] on the Escondido. 



17. Dendroica aestiva ((iinel.). 



Abundant winter resident. First seen August 0, and afterwards 

 abundant, swarming in the tall grass bordering the Escondido Eiver. 

 llemains until late in lY^bruary at least. 



I never heard this or any of the other Xorth American birds sing 



here. 



18. Dendroica coronata (Liuji.). 



iSTot very common. Observed at Greytown and on the Escondido. 

 Several noticed November 28, and one on February 1(>. 



19. Dendroica maculosa ((iniel.). 



Quite common in winter. First seen October 27, and last on Febru- 

 ary 5. 



20. Dendroica pensylvanica (Liun.). 



Abundant during the winter months, noticed from September 29 to 

 February 10. 



21. Dendroica dominica albilora Baird. 



One specimen collected at Greytown, February 12. 



22. Seiurus aiirocapillus (Linn.). 



Rather rare, first seen November 7, and occasionally noted until 

 May 6. 



23. Seiurus noveboracensis notabilis ((irinn.). 

 Abundant in winter, from September 20 until May 5. 



24. Seiurus motacilla (Vieill.). 



Rather rare, first seen October 23. 



25. Geothlypis formosa (Wile.). 

 Very common, first seen September 22. 



26. Geothlypis Philadelphia (Wils.). 



Shot an immature male on February 4, at Greytown; the only one 

 seen. 



