1. Dendroica æstiva, _Gm._ ♂ Pa., 940. 2. “ maculosa, _Gm._ ♂ D. C., 20634. 3. “ montana. (From Audubon.) 4. “ olivacea, _Giraud_. ♂ Mex., 30692. 5. Dendroica kirtlandi, _Baird_. ♂ Ohio, 4363. 6. “ dominica, _Linn._ ♂ Ga., 3322. 7. “ “ , _var._ albilora, _Ridgw._ ♂ Ohio, 7701. 8. Dendroica palmarum, _Gm._ ♂ N. S., 26929. 9. “ discolor, _Vieill._ ♂ Pa., 1091. 10. “ graciæ, _Coues_. ♂ Ariz., 40680. 11. Seiurus aurocapillus, _Linn._ ♂ Pa., 1433. 12. “ noveboracensis, _Gm._ ♂ Pa., 2434. 13. “ ludovicianus, _Aud._ ♂ Pa., 964.] In the Review (p. 209) several variations in this species are noted; but at that time there was not a sufficient number of specimens to warrant our coming to a conclusion as to their value. Now, however, we have better material before us, and upon the examination of about thirty specimens, including two series of nearly equal numbers,—one from the Atlantic States and the West Indies, the other from the Mississippi region and Middle America,—find that there are two appreciably different races, to be distinguished from each other by points of constant difference. All birds of the first series have the bill longer than any of the latter, the difference in a majority of the specimens being very considerable; they also have the superciliary stripe bright yellow anteriorly, while among the latter there is never more than a trace of yellow over the lores, and even this minimum amount is discernible only in one or two individuals. The West Indian form is, of course, the true _dominica_, and to be distinguished as var. _dominica_; as none of the synonymes of this species were founded upon the Mexican one, however, it will be necessary to propose a new name; accordingly, the term var. _albilora_ is selected as being most descriptive of its peculiar features. The following synopsis, taken from typical specimens, shows the differences between these two races:— (No. 3,322, ♂, Liberty County, Georgia.) Bill (from nostril), .45; tarsus, .60; wing, 2.60; tail, 2.00. Superciliary stripe, anterior to eye, wholly bright yellow; yellow of chin and maxillæ extending to the bill. _Hab._ In summer, Atlantic States of United States, north to Washington. In winter, and possibly all the year, in Cuba, Santo Domingo, and Jamaica … var. _dominica_. (No. 61,136, ♂, Belize, Honduras.) Bill (from nostril), .35; tarsus, .60; wing, 2.70; tail, 2.20. Superciliary stripe wholly white; yellow of chin and maxillæ bordered narrowly next the bill with white. _Hab._ In summer, the Mississippi region of United States, north to Lake Erie; common in South Illinois. In winter, and possibly all the year, in Mexico, south to Guatemala, Yucatan on the Atlantic, and Colima on the Pacific side … var. _albilora_.