28o THE STORY OF A BIRD LOVER 



migrant at the Dry Tortugas. Now the represen- 

 tative of the white-eyed vireo which resides in 

 southern Florida, and which has become so spe- 

 cialized in appearance as to receive an appellation 

 of its own, the Key West vireo, was not observed 

 at the Dry Tortugas. Similarly, the Maryland 

 yellow-throat, which is a common migrant on the 

 eastern coast of North America, was observed 

 continually during my stay; while its near ally, 

 the Florida yellow-throat, characteristic of the 

 Gulf Coast of Florida, and which breeds there, 

 was not present, and has never been observed 

 away from Florida. The generalization to be 

 made from these observations is that these spe- 

 cialized forms have developed from closely allied 

 kinds, largely as they have acquired non-migra- 

 tory habits. 



During the interval which had elapsed since my 

 return to Florida in 1886, concluding with my 

 work in the year 1890, I had collected much 

 material; four months which were spent in the 

 mountains of Virginia and North Carolina had 

 added to this. 



An undescribed species of marsh-wren, a new 

 sub-species of the white-bellied nuthatch, and the 

 determination of the wild turkey of Florida as a 

 sub-species, were parts of the contribution. In 

 view of the fact that I have not seen in collec- 

 tions, nor found in any locality where I have 



