32 
Chapman, The Eastern Forms of Geothlypis trichas. [jan) 
figure is of the same size with mine, and hath such a black line 
from the forehead drawn through the eye: it hath, I believe, 
never till now been described, Petiver having given it only a name. 
“P. S. Since the writing of the above, I have received the 
Yellow-Throat, together with a drawing of it, very neatly and 
exactly done, by Mr. William Bartram, of Pensylvania, who 
hath enabled me to give a further account of this bird; for he says, 
it frequents thickets and low bushes by runs (of water, I suppose, 
he means) and low grounds; it leaves Pensylvania at the approach 
of winter, and is supposed to go to a warmer climate.” 
The “Carolina” of Edwards, who wrote in 1758, included the 
North and South Carolina of to-day, his type, therefore, coming 
from within the range of ignota. The question, however, may 
properly be asked whether Edwards’s type was not a migrant 
and hence, under the current status of this group, either trichas or 
brachidactyla. But, assuming that Edwards’s type had, come 
from Maryland, it might with equal pertinence be asked, how 
should we know that it was not a migrant brachidactyla ? 
Again it has been said that the present writer refused to accept 
Audubon’s name roscoe for a Yellow-throat described from Mis- 
sissippi as applicable to the form known as ignota on the ground 
that Audubon’s type was doubtless a migrant from the north. (It 
was shot in September). The name roscoe was not rejected pri- 
marily for this reason, but because Audubon himself, presumably 
on the basis of actual specimens, referred his roscoe to the bird 
then known as trichas, and without positive evidence which would 
prove him to have been in error we have absolutely no right to 
reverse his determination. 
On the basis, therefore, of locality alone, the name trichas is 
applicable to the southern Yellow-throat heretofore known as 
ignota ; but, as a matter of fact, we have something more than 
mere locality on which to base an opinion, Edwards’s figure and 
description being obviously more applicable to the southern than 
to the northern bird, while, although this now has no nomencla- 
tural bearing on the matter, Audubon’s figure of roscoe is quite as 
certainly not based on the southern form. 
What then, assuming that this view of the matter is correct, 
becomes of the form lately known as trichas, the Maryland Yellow- 
throat ? 
