344 S. F. Baird on the Distribution and 
Vireo Noveboracensis (W). Common; resident. 
(W). 
Eremophila cornuta, Three; October and February. 
; June 12. 
Chrysomitris tristis. Several; March. 
Curvirostra Americana, January to May. 
leucoptera. M ) ; 
Plectrophanes nivalis, January to February. 
Passerculus savana (W). April. 
Pocecetes gramineus, One; Oct. 25. 
Coturniculus Henslowi. Small fiock ; December. 
Melospiza palustris. One; December. 
Guiraca Ludoviciana (W). Two; October and April. 
Cardinalis Virginianus. Common; resident. 
Dolichonyx oryzivorus (W). Nearly every autumn; October. 
cterus Baltimore (W). Two; October. 
Corvus Americanus, A few every year; perhaps breeds. 
venaidura Carolinensis (W). One; March, 1850. 
Jhamzpelia passerina (W). Common; resident. 
Also most of the waders and a considerable number of the 
swimming birds. 
~ 
lusion.—From a careful consideration of the facts men- 
tioned in the preceding pages, we are, I think, entitled to derive 
the following generalizations in regard to the interchange of 
irds between America and EHurope. 
Kuropean birds, especially the land species, reach Greenland 
and return to the continent by way of Iceland, the Faroe Isl- 
ands forming a stepping-stone from Great Britain and Seandl- 
navia. In very rare instances species seem to proceed direct to 
American species observed in Kurope are found in Greenland 
at all. : 
Most specimens of American birds recorded as found in Hu- 
rope were taken in England (about 50 out of 69), some of them 
in Heligoland; very few on the continent (land birds in only 
five instances). 
n nearly all cases these specimens belonged to species abun- 
dant during summer in New England and the eastern provinces 
of British America. 
In a great majority of cases the occurrence of American birds 
in England, Heligoland, and the Bermudas ee been in the 
autumnal months. —, 
