184 BIRDS OF OHIO. 



may be as early as the middle of August, the last passing 

 south about September 25. 



256. (663a.) DENDROICA DOMINICA ALBILORA Ridgw. 48. 



Sycamore Warbler. 



Synonyms: Dendrceca dominica var. albilora, Sylvia pensilis, 



Sylvicola pensilis, Dendroica superciliosa, D. dominica. 



White-browed Yellow-throated Warbler, White-cheeked 



Warbler. 



Kirtland, Am. Journal Sci. & Arts, XL, 1841, 21. The first refer- 

 ence for the subspecific name as it now stands should be 

 Ridgway, Am. Nat., VII, 1873, 606. 



This species appears to breed sparingly across the state, 

 but is known by few observers. I have never seen it. Dr. 

 Wheaton states that it is the earliest of all the warblers in 

 spring, even preceding the Myrtle. If it has passed through 

 Lorain county it has entirely eluded careful search for a 

 half-dozen years. It certainly does not breed in the western 

 half of the county or it would have been found at some 

 time. It has actually been found breeding at Cleveland, Mt. 

 Vernon, Wauseon, and Cincinnati. More careful search 

 for this early warbler should reveal its presence in many 

 parts of the state where it is not now known even as a mi- 

 grant. 



Reliable migration dates are wanting, but it appears that 

 the birds sho.uld be looked for early in April, and that some 

 remain in the southern counties well into October. Syca- 

 more groves appear to be the favorite places for these 

 birds. 



257. (667.) DENDROICA VIRENS (Gmel.). 49. 



Black-throated Green Warbler. 



Synonyms: Dendroeca virens, Sylvia virens, Sylvicola virens, 



Motacilla virens. 

 Kirtland, Ohio Geol. Surv., 1838, 163, 181. 



Unlike the two following species, this one is among our 

 commonest migrant warblers. Dr. Wheaton 's designation 

 of "Abundant spring and fall migrant," still applies. It is 

 common in the woods, but seems to prefer the lawns, parks, 



