1889. ] HASBROUCK on Geothlypfis trichas roscoe. 167 
RESTORATION OF AN AUDUBONIAN FORM OF 
GEOTHLYPIS TRICHAS TO THE AMERICAN 
AVIFAUNA. 
BY E. M. HASBROUCK. 
More than a year ago while comparing specimens of the genus 
Geothlypis, one in particular arrested my attention as being 
materially different from any in my collection, and from any I had 
seen. It is numbered 442 and was taken by myself at Big Lake 
George, Florida, March 18, 1886. I carried it to Mr. Ridgway 
who, after comparing it with the series in the Smithsonian, 
declared it different from anything he had seen, and probably a 
new race, but advised me to say nothing concerning it until I 
secured more of the same variety. In accordance with his counsel 
I visited Florida in December of the past year for the purpose of 
securing as many as possible, and although unable to reach the 
scene of the first capture, I was successful in finding the bird abun- 
dant in Putnam County in the vicinity of Palatka, and was fortu- 
nate in obtaining seven more ; three males and four females, all of 
which (the males) were nearly exact counterparts of the type 
‘with the exception of one immature male referred to later. On 
reaching Washington I submitted the entire series of eight to Mr. 
Ridgway, and with the assistance of Dr. Stejneger, compared 
them a second time; we found them differing considerably from 
the true ¢rzchas in possessing the larger size and more extended 
yellow beneath of occzdental7s, together with an extremely narrow 
and paler ashy band behind the mask, and from occ¢dentalzs by the 
paler yellow throat and less orange of ¢réchas. Audubon (Orn. 
Biog., Vol. I, 1832, p. 124, pl. 24) describes an zmmature specimen 
of the Yellow-throat taken in Mississippi, to whichhe gives the 
name Sy/véa roscoe, and afterwards refers it to ¢rzchas : the descrip- 
tion tallies almost exactly with mine above mentioned, while speci- 
mens in the Smithsonian collection from the Gulf States and 
Mississippi Valley agree closely with mine, thus leaving little room 
for doubt that it isa valid race between Geothlypis trichas and 
Geothly pis trichas occidentalis, 1 therefore have the pleasure of 
restoring along neglected form to the American fauna, giving to it 
the name Geothlypis trichas roscoe (Aud.), 
