564 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. L1885. 



-•"^10. Deudroica vireiiE (Gmel.)- Fifteen specimens. 

 ^-11. Dendroica coerulesceus (Linn.)- Adult male and femal.- 

 -^^ 12 Dendroica maculosa (Gmel.)- Two examples. 



-|-13. Dendroica dominica albilora Baird. 



Seven specimens, all decidedly referable to this form, since, although 

 three examples have more or less yellow above the lores, the measure- 

 ments are those of albilora. Eespecting the characters of this form, it 

 may be remarked that while as a rule the superciliary stripe is entirely 

 white, it is often yellow anteriorly in specimens which are otherwise 

 typical. In true dominica, on the other hand, the superciliary stripe is 

 apparently always yellow anteriorly, while the bill is much longer than 

 in the western form. 



The occurrence of this form to the exclusion of the true dominica^ 

 which alone winters in the West Indies, shows the importance of care- 

 fully discriminating 'uetween geographical races, however slightly they 

 may be differentiated. The following species is a similar illustration of 

 the case, although the facts of distribution are difterent, the typical 

 form wintering in bolh the West Indies and on Cozumel (but not on tho 

 mainland), while I), palmarum hypoclirysea apparently does not pass 

 beyond, the Sonth Atlantic and Gulf States. 



-i-14. Dendroica palmarum (Gmel.). Seven specimens. 

 -4-15. Dendroica discolor (Vieill.). Three specimens. 



I'liis is another species of Eastern North America which winters bot4i 

 in the West Indies and on Cozumel, but apparently not on the main- 

 hnid of Middle America. 



4-16. Seiurus noveboracensis notabilis, Eidgw. Two specimens. 



4-17. Seiurus aurocapillus (Lion ). Two specimens. 



-i 13. Geothlypis trichas occidentalis, Brewsf. Three specimens. 



These are interesting as showing that it is the interior and western 

 form which winters on Cozumel, and not the eastern. The latter win- 

 ters in the South Atlantic States, the Bahamas, Cuba, and. Jamaica. 



-t-19. Sylvania mitrata (Gmel.). Four adult males. 

 --20. Setophaga ruticiila (Linn.). Seventeen sjiecimens. 



Family COEREBIU^. 

 _:- 21. Certhiola caboti, Baird. 



Twenty-four skins and twenty-two alcoholic specimens confirm tho 

 validity of this species. It is, as indicated by Professor Baird in the 

 original description {American Natural i.-ii, yH, G12, and Hist. H. Am. 

 B., I, p. 427), nearly velated to C. bahamcnsis ; but it has a still closer 

 ally in the recently described C. tricolor, nobis, from the island of Old 

 Providence, in the Caribbean Sea. (See these Proceedings, Vol. VIF, 

 p. 178.) With the latter it agrees in the greater extension of the yellow 

 of the lower i)art8 and the darker color of the back than in G. halia- 

 meny.is. 



