Toni): Ornithoi.ocv ok Haiiama Isi.AN'ns. 429 



Two other specimens from Andros in the collection nf the American 

 Musenm are much \ellower, alUu)U^li collected in Ma>-, while a third, 

 dated April iS, is almost as pale below as Vireosylva magislcr. In the 

 Field Museum collection there are eighteen skins from Andros, more 

 or less badly discolored by preservative, but as nearly as can be 

 determined all " intermediates." The remainder of the Field Museum 

 series may be allocated as follows (employing the nomenclature 

 currently accepted) : 



Great Bahama: i nearly i\\)\ci\\ flavescens, 8 intermediates. 



Abaco: 8 crassirostris, 2 intermediates, i flavescens (not finite 

 typical). 



Eleuthera: 2 crassirostris, i inlcnnediate, 30 (piite typxcdA flavescens. 



New Providence: 6 crassirostris, 4 intermediate, I flavescens. 



Biminis: i crassirostris, I intermediate, I flavescens. 



Mariguana: ly flavescens, in rough plumage, but mainly typical. 



Great Inagua: 24 adult, 13 young flavescens, i crassirostris. This 

 latter specimen (No. 25338), together w^ith a skin (No. 40100) in the 

 American Museum collection taken at the same time and place (North- 

 west Point, June 2, 1879) is much worn and faded, and cannot other- 

 wise be matched. 



Caicos: () flavescens. 



A series of young birds from Great Inagua, taken between June 27 

 and August 4, 1891, in the Field Museum collection, are interesting 

 in that they show the new yellow feathers of the under parts, charac- 

 teristic of flavescens, being directly assumed by postju venal moult. 

 The Juvenal dress is white below, shaded with yellow on the sides and 

 crissum, the yellow of the sides of the head indicated, but much paler 

 than in the adult, the back more grayish. 



The color-differences between typical birds of the two supposed 

 forms are sufficiently evident upon comparison, and considered alone 

 are obviously of subspecific value. As is quite natural also (at least 

 in the case of other than insular forms) intermediate examples occur. 

 So far all is well, but when we come to correlate the distribution of the 

 two forms with definite geographic areas we at once encounter diffi- 

 culties. For, while in general it would seem that the dull bird reaches 

 its extreme development and predominance in the more western and 

 northern islands of the Bahaman group, and the bright bird similarly 

 in the more southern and eastern islands, we find in the intermediate 

 islands a most puzzling series of intergrades between the two forms, as 



