64 



INSECTIVOR.E. 



Family SYLVIAD^F. 



Genus Sylyia. f Latham.] 



BLACK-THEOATED WAEBLEE. 



Sylvia virens. 



Sylvia virens, Latham. Wilson. 



" " Audubon; Plate 399. 



" " Gatke; in Naumannia, 1859, 



p. 425. 

 Sylvicola virens, Swainson. Bonaparte; 



Birds of E. and A., p. 22. 



Specific Characters. — Plumage aboye yellowish, olive green; 

 throat black, the feathers in winter being edged with yellowish 

 white; first and fourth primary of equal length, the second and 

 third a trifle longer. Length five inches. 



The lonely rocky island whicli rears up its bold 

 red-looking front to the eyes of the traveller, as he 

 steams near the mouth of the Elbe, on his way to 

 Hamburg, seems destined to be a rich field of dis- 

 covery to the European ornithologist. So many new 

 forms have lately turned up in Heligoland, that the 

 celebrated Professor of Brunswick — Blasius, has been 

 induced to make an excursion thither, and examine 

 for himself the treasures which have been collected 



