AMERICAN AVARBLEKS. 71 



about the middle of March, and I. found tliem evidently migrat- 

 ing at Enterprise from March i6 to the 24, 1900. In summer 

 the Yellow-throated Warblers are found regularly as far north 

 as Southern Maryland and Virginia, very casually as far north 

 as New York and extreme Southern New England. The only 

 claim that it can have as a member of the bird fauna of Mass- 

 achusetts rests with a single specimen that was taken in Ded- 

 ham November 4, 1866, by my old friend Mr. George E.Browne. 

 Song. Referring again to my earlier impression of this 

 warbler, I find from notes made over thirty years ago that I 

 thought it sang like a Pine Warbler or possibly like a Black and 

 White Creeper. Songs which I was sure were produced by 

 this species which I heard at Enterprise, Florida, in March, 

 19CO, did not sound at all like the notes of either of these birds. 

 The song was quite simple and consisted of four or five warb- 

 ling notes. This, however, may have been a practicing song 

 given in early spring, while the breeding song may be differ- 

 ent. 



Genus. LITTLE WARBLERS. Compsothlypis. 



Size, small, 4.25 to 4.90 lons". Colors, bluish ab<>ve, with a tri- 

 anjiular greenisli-yellow spot 011 tliebaok; yellow heueath, with- 

 out any decided black markings anywhere. Wing" bands and tail 

 spots, usually present, and Avhite. 



Most members of this genus are tropical in distribution, 

 occnrring in Northern South America, Central America, Mex- 

 ico and adjacent islands. ^V single species has reached East- 

 ern United States and this has produced one well defined sub- 

 species. 



The bill is shorter than the head, rather slender, and without notch at tip. 

 Tarsus, shorter than middle toe and claw. Coracoid bones, equal in length to 

 the top of the keel. 



