1890.] Chapman on Geothlypis trichas ignota. I •? 



specimens. A second specimen from New Orleans (Coll. Gus- 

 tavo' Kohn, Oct. 30, 1SS9) is very similar to the bird just men- 

 tioned. Two adult males in the collection of Dr. A. K. Fisher 

 (Nos. 25S5 and 25S6, June 1, 1S86), from the same locality, 

 agree in coloration with typical eastern specimens of trichas; No. 

 25S5 has the abdomen lightly washed with yellow, but in No. 

 25S6, this color is restricted to the throat, breast and crissum. 

 The measurement of wing and tail correspond with those of 

 northern examples, but the bill is nearly as large as any Florida 

 specimen I have examined. These Louisiana specimens are very 

 puzzling, and without the aid of further material it will be impos- 

 sible to accurately determine the exact relationships of birds from 

 this region. 



Mr. Hasbrouck's collection contains examples of ignota from 

 Palatka and Big Lake George, Florida ; I have taken specimens 

 at Gainesville, finding also as late as April 29 typical specimens of 

 trichas. Six birds taken on the east peninsula opposite Micco, 

 Brevard County, are apparently all referable to the northern 

 form, though several are intermediate. They were, however, 

 taken in a heavy growth of 'sedge' (Borrichia frutescens) , while 

 the resident bird, I think, favors the low growth of scrub-pal- 

 mettos ( Chaincerops serrulata) which affords it excellent oppor- 

 tunities for concealment. Mr. Scott's collection contains nine 

 adult winter males, six of which are referable to ignota, while 

 the others are apparently more northern wintering birds. These 

 six specimens, four taken in October and two in February, agree 

 very closely among themselves, having the ashy crown band 

 much restricted, the tail as long or longer than the wing, and 

 tarsus .80 inch or more. 



Adult female in winter. — Similar to adult fall specimens of trichas, but 

 darker above, with the yellow of the breast and underparts washed with 

 brownish. 



Immature birds. — Immature birds of both sexes are not readilv distin- 

 guishable from wintering northern specimens, and from the nature of the 

 case there are at this season specimens showing every degree of inter- 

 gradatio-w, both as regards size and coloration. Generally speaking the 

 resident birds are slightly darker above, with the marking of the under- 

 surface deeper in color and of greater extent. 



I am so deeply indebted for the loan of material that it is diffi- 

 cult for me to adequately express my thanks. Mr. Scott's splen- 

 did series of some sixty Florida specimens alone made this paper 



