1851.J 153 



5. Vierosylvia gilv a, {Vieill.) Wilson Am. Orn. v, pi. 42, fig. 2. Aud. B. of 

 Am., pi. 118. 



Muscicapa g;ilva. VieiUot. Ois. d'Am. Sept. i, p. 65, pi. 34. 

 Muscicapa melodia. Wilson Am. Orn. v. p. 35. 

 Hab. The whole of North America. 



6. Vireosylvia philadelphica, nobis. 



Form. Generally somewhat resembling that of V. gUva, but is smaller, with 

 the bill much shorter, and the form generally shorter and stouter. 



Dimensions. Total length of skin from tip of bill to end of tail 4| inches, 

 wing 2 and 6-lOths, tail 2 inches. 



Cotois. Line over the eye pale greenish white, very distinct. Entire upper 

 parts olive green, inclining to ash on the head, quills and tail feathers brown, 

 narrowly edged with green. Under parts pale yellowish white, shading into 

 greenish upon the sides. Nares dark, bill horn color. 



Hab. Near Philadelphia. 



Obs. This small species resembles V. gilva more than it does any other 

 species, but is smaller and can at once be distinguished by its much shorter and 

 weak bill. Its colors are more vivid and the superciliary line more distinct. 



I shot the bird now described in Bingham's woods near Philadelphia in Septem- 

 ber, 1842, but have never seen another specimen. It was in the upper branches 

 of a tree of considerable heighth, engaged in capturing insects, and attracted my 

 attention by its slow and apparently deliberate movements. 



III. Notice of species which I have not seen, and general observations. 



1. Vireo versicolor. Hartlaub. Revue Zoologique, 1843, p. 289. 



Orig. descrip. " Supra olivaceo-viridis, pileo toto nuchaque nigricante-plum- 

 beis ; plumulis ciliaribus dilute flavis, tectriclbus alae majoribus rufis; remigibus 

 primariis angustissime, secundariis latins rufo marginatis, tertiariis pogonio ex- 

 terno pallide fulvis; flexura alas flavo et olivaceo variegata ; subtus flavus, gula 

 collo antico pectoreque fasciolis multis interruptis et irregularibus olivaceis 

 transversim variegatis ; cauda nigricante, rostro obscure plumbeo; mandibulae 

 tomiis apiceque albidis, pedibus nigris. Long. 4i. La plus petite espece du 

 genre." 



Above olive green, with the head above and nape blackish lead color, ciliary 

 feathers pale yellow, greater wing coverts rufous, primaries very narrowly, 

 secondaries more broadly margined with rufous, tertiaries with their external 

 webs pale fulvous, flexure of the wing variegated with yellow and olive; beneath 

 yellow, throat, neck before and breast with many interrupted and irregular trans- 

 verse little lines of olive, tail blackish, bill obscure lead color, edges of the man- 

 dibles and apex white, feet black. Length about 5 inches, (4f inches French.) 

 The smallest species of the genus. 



Obs. This bird must be quite different in general appearance from any other 

 of either of the genera Vireo or Vireosylvia. Its rufous wing coverts and broad 

 margins of the secondaries also rufous are quite peculiar. 



M. Hartlaub is mistaken about this being the smallest of the genus. There 

 are at least three species which are smaller. 



