104 MARYLAXD YELLOW-TTTROAT. 



half of the width of the sternum. ( See Fig. 9, B, page 5. ) The 

 species are mostly sub-tropical, a few occur in the south tem- 

 perate portion of North America, and one species and one 

 sub-species have extended their range further northward, reach- 

 ing New England. 



Fig. 46. 



Head of Maryland Yellow-throat. 



MARYLAND YELLOW-THROAT. 



Geotblypis triclias. 



Plate X ; Fig. 5, male ; Fi^. G, female 



Size, rather smalt, from 5.10 to 5.25. Olive green above; 

 prominant black mask on face; throat and chest yellow. 

 Rhode Island and possibly the southern portion of Connecti- 

 cut, in summer. 



Adui.t Mai.e. Grayish olive above. Forehead and sides of head, 

 black, bordered behind by whitish, thus forming a mask on face. Throat 

 and chest, lemon yellow. Under tail coverts, paler yellow. Remaining 

 under parts, buffy white. 



Adult Female. Similar in general coloration, but lacks the black 

 mask and whitish of head, and the yellow beneath is much duller. 



Young Male. Similar to the adult female, but shows more or less 

 traces of the black mask, especially below the eye. 



Young Female, Differs from the adult in having very little trace 

 of yellow below, and in having the top of the head decidedly brownish. 



