FIG. i. fltlminthophila pinus, male. 



FIG. 2. fIdmi>:lJiophila pinus, female. 



FIG. 3. "Lawrence's Warbler," male; one of the integrading forms. 



FIG. 4. "Brewster's Warbler," male; another of the intergrading forms 



FIG. 5. Helminthopkila chrysoptera, male-. 



FIG. 6. Helminthophila chrysoptera, female. 



L 



if 



f.C I/ 





