BLACK-TIIROATED WARBLER. 67 



the sliortest. Wings are tolerably pointed; tlie first and 

 fourth primaries are of equal lengthy the second and 

 third only a trifle longer; the second, third, and fourth, 

 are near the tips of the outer web very strongly 

 notched. 



The whole length of the bird, from . the forehead to 

 the point of the tail, five inches; length of the wing 

 in repose two inches and six lines; of the tail two 

 inches; an inch of the tail uncovered by the wings. 

 Beak five lines; tarsus nine lines; middle toe three 

 lines; claws two lines; hinder toe three lines, and the 

 very curved claw of ditto two lines and a half." 



The bird has been preserved in spirits. 



Sylvia virens belongs to the group of Leaf Warblers, 

 but as its existence in Europe was not known by me 

 sufficiently early to place it in that section, I have 

 introduced it here, rather than defer a notice of it to 

 the end of the work. Its habits are so well described 

 by Audubon, that 1 take the liberty of transcribing the 

 following from his large octavo work upon the "Birds 

 of America." 



"I have traced this species from Texas to New- 

 foundland, although at considerable intervals, along our 

 Atlantic coasts, it being of rare occurrence, or wanting 

 in some parts, while in others it is abundant: but hi 

 no portion of the United States have I met with it 

 so plentiful as around Eastport, in Maine, where I saw 

 it in the month of May. Many remain all summer in 

 that State, as well as in Massachussetts and the northern 

 parts of New York; and some are found at that season 

 even in the higher portions of Pennsylvania. On the 

 coast of Labrador it was not observed by me or any of 

 my party, and it is not mentioned by Dr. Kichardson, 

 as having been seen in the Fur Countries. Its habits 



