VIREOSYLVIA. 



335 



of bill. Young birds have considerably shorter bills, the colors less 

 vivid, but otherwise similar to the adults. 



I find no appreciable differences in specimens from Guatemala, 

 Panama, and Bogota, either in size or other characters, which can- 

 not be readily matched by northern skins. 



The name of Linnaeus, cited for this species, is based by him on 

 pi. 253 of Edwards' Gleanings, and on pi. 54 of Catesby's Carolina ; 

 the former, however, and that first mentioned, being unquestionably 

 the Jamaican V. calidris, while the latter refers to the subject of the 

 present article. A strict adherence to the rule of priority may re- 

 quire the name " oUvaceus," therefore, to be thrown aside, and some 

 other, as " virescens," YieilL, adopted; but as Catesby's plate has 

 priority of Edwards', we may perhaps consider the priority of quota- 

 tion as neutralized, and leave " olivaceus" for the species. A similar 

 question exists in reference to the proper specific name of the North 

 American " Mimus polyglottus." I am not quite satisfied, however, 

 that either of these names should be retained. 



About one hundred and thirty specimens have been examined, 

 from various localities throughout the whole eastern province of the 

 United States. 



(21,945.) With eggs. 



