SYLVICOLID^E. XXVII. 63 



Crown bluish or yellowish, not as above some yellow. 

 Throat black (sometimes obscured by yellow tips to 

 feathers) ; outer tail feather white-edged. mretis, 13. 

 Throat yellow; back ashy blue; cheeks black. 



dominica, 10. 



back yellowish olive; cheeks same. 



pinus, 14. 



We copy from Coues' key the following valuable 



DIAGNOSTIC MAKKS OF WARBLERS IN ANY PLUMAGE. 

 A white spot at base of primaries. . . . ccei-ulescens, 2. 

 Wings and tail dusky, edged with yellow. . . cestiva, 1. 

 Wing bars and belly yellow. . . discolor, 12. 



Wing bars yellow and belly pure white. . pennsylvanica, 6. 

 Wing bars white and tail spots oblique, at end of two outer 



feathers only pinvs, 14. 



Wing bars brownish ; tail spots square at end of two outer feathers 



only palmarum, 15. 



Wing bars not evident (?); whole under parts yellow; back with 



no greenish kirtlandi, 11. 



Tail spots at end of nearly all the feathers, and no definite yellow 



any where. ....... ccerulea, 5. 



Tail spots at middle of nearly all the feathers; rump and belly 



yellow maculosa, 4. 



Rump, sides of breast (usually) and crown with yellow ; throat 



white coronata, 3. 



Throat definitely yellow; belly white; back with no greenish. 



dominica, 10. 



Throat yellow or orange ; crown with at least a trace of a central 

 yellow or orange spot, and outer tail feather white-edged 

 externally UacKburnice, 9. 



Throat, breast and sides black, or with black traces (seen on part- 

 ing the feathers); sides of head with diffuse yellow; outer 

 tail feather white-edged externally. . . . mrens, 13. 



With none of the foregoing special marks. 



striata 8 or castanea 1 . 



