168 BLAGK-THEOATEB OBEEN WABBLEB. 



INSECTIVOPv^. 



Familt/ SYLVIIDJE. 



Genus Dendroica. ( Gray.] 



Geyieric Characters. — Bill conical, attenuated, depressed at the base, where 

 it is, however, scarcely broader than high, compressed from the middle. 

 Culmen straight for the basal half, then rapidly curving, the lower edge 

 of the upper mandible also concave. Gongs slightly convex and ascending. 

 A distinct notch near the end of the bill. Bristles, though short, generally 

 quite distinct at the base of the bill. Tarsi long, decidedly longer than 

 middle toe, which is longer than the hind one; the claws rather small, 

 and much curved; the hind claw nearly as long as its digit. The wings 

 long and pointed: the second quill usually a very little longer than the 

 first. The tail slightly rounded and emarginate. Colours : tail always with 

 a white spot ; its ground-colour never clear olive green. — Baird. 



BLACK-THROATED GREEN WARBLER. 



Dendroica virens. 



Dendroica virens, Baird. Sclater and Salvin. 



Sylvia virens, Latham. Wilson. Audubon. 



" " Gatke; in Naumannia, 1859, p. 425. 



" " Bree; I St. Edition. 



Sylvicola virens, SwAiNSON. Bonaparte. Reinhardt. 



Rhimanphus vire7is, Cabanis ; Mus. Hein., 1851. 



Specific Characters. — Plumage above yellowish olive green; throat, black, 

 the feathers in Avinter 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 wliicli rears up its bold red-looking front 

 to tlie eyes of tlie traveller, as he steams near the mouth of the 



