1874.] . 319 [Ridgway. 



hyemalis arrived as early as September 26th, though another season 

 it had not appeared as late as the 20th of October. None of them 

 remain longer than the early part of April, the last lingering individ- 

 uals of the snow bird and purple finch (Carpodacus purpureus) 

 departing by the 10th. 



It is a curious fact, and one which perhaps has been noted before, 

 that many species of the migratory warblers pass northward through 

 the country east of the Alleghanies and return southward through 

 the Mississippi Valley, and vice versa. Dendroica castanea, D. black- 

 burnice, D. maculosa and Myiodioctes canadensis are abundant in 

 autumn, but I have never seen a specimen of either in the spring, 

 when all are common in the Atlantic States. On the other hand, 

 Perissoglossa iigrina, D. ccerulescens, D. palmarum and Oporornis 

 agilis, are more or less abundant in spring, but rare or wanting in 

 autumn. D. pennsylvanica, though it comes in spring and remains 

 all summer, is yet abundant only in the fall when the young (in the 

 green and white plumage) in some years outnumber all the other 

 species together. According to Mr. Brewster it has never been taken 

 in this plumage in Massachusetts. 



The following table of migrations is condensed from the record of 

 four years' observations at Mt. Carmel, and shows the earliest and 

 latest arrival of sixty-two species noted during that time. 



Table of Migrations. 



Spring Arrivals. 

 Species marked with an asterisk (*) sometimes remain all winter. 



1. 



*Anas boschas. 



January 15. 





2. 



*Ectopistes migratoria. 



a 



15-Feb. 



25. 



3. 



*Dafila acuta. 



a 



20. 





4. 



*Brania canadensis. 



a 



20-Feb. 



14. 



5. 



*Mergus americanus. 



u 



20. 





6. 



*Spatula clypeata. 



u 



20. 





7. 



*Aythya americana. 



a 



25. 





8. 



*Nettion carolinensis. 



Febru 



ary 1. 





9. 



*Mareca americana. 



ii 



18-28. 





10. 



Seiurus ludovicianus. 



a 



20. 





11. 



*Aix sponsa. 



u 



25. 





12. 



* Querquedida discors. 



a 



28. 





13. 



*Grus canadensis. 



March 1-4. 





14. 



* " americanus. 



t< 



6~. 





15. 



*Bucephala albeola. 



a 



1. 





