1890.] Chapman on Geothlypis trichas ignota. I I 



The Sylvia ( Geothlypis) roscoe of Audubon, based on an imma- 

 ture male* specimen taken in Mississippi in September, I do not 

 consider identifiable ; if the description does refer to the Mississ- 

 ippi Valley bird, 1 am at a loss to see on what characters its sepa- 

 ration can be urged, and'I do not, therefore, consider it worthy of 

 recognition. The Geothlypis trichas roscoe of Hasbrouck, the 

 types of which I have examined, based on winter specimens from 

 Florida, I hope to show is referable to the resident Florida form, 

 and not to the bird occupying the Mississippi Valley. 



On the relationships of the Florida bird. — For the resident 

 Florida bird, which I consider worthy of recognition, I propose the 

 name 



Geothlypis trichas ignota, subsp. nov. Florida 

 Yellow-throat. 



Geothlypis trichas roscoe Hasbrouck. Auk, VI, 1S88, p. 167 (in part; 

 not Svlvia roscoe Aud. Orn. Biog., I, 1831, p. 124, PI. xxix). 



Subsp. Char. — Similar to Geothlypis trichas (Linn.), but with longer 

 tarsus, tail, and bill ; yellow of underparts of a deeper shade and greater 

 extent; flanks of a much darker color ; the upper parts browner; the facial 

 mask wider, with its ashy border (in summer specimens) slightly paler 

 and of greater extent. First primary shorter, equalling the eighth instead 

 of the sixth, as in Geothlypis trichas. 



Adult male in breeding plumage- — Type No. 39S2, Coll. W. E. D. Scott. 

 Tarpon Springs, Florida, May 19, 1SS7. Above olive green with a slight 

 rusty tinge, somewhat lighter on the rump and tail ; wings brownish, the 

 feathers edged with the color of the back, the outer web of the first primary 

 whitish, the carpal bend yellow. A broad black facial mask includes later- 

 ally the eyes, auriculars, and sides of the throat, reaching on the forehead to 

 "near the posterior margin of the eyes, and is bordered by a band of hoary 

 ash, which has no abrupt posterior termination but, suffusing the crown, 

 changes gradually into the color of the back. Under parts rich yellow, 

 whitish on the centre of the abdomen ; flanks rich ochraceous brown, the 

 sides of the breast slightlv washed with the same color. Measurements : 

 Wing, 2.26; tail, 2.32; tarsus, .84; exposed culmen, .50 inch. 



Remarks. — In this plumage I have three specimens : No. 6070, 

 in Mr. Scott's collection, taken at Tarpon Springs, June 12, 18S8, 

 is in very-worn plumage, and largely for this reason differs from the 

 type in having much less ashy color on the crown, in being 

 greener above and in having the flanks paler, the yellow, how- 

 ever, being of about equal extent. No. 61,135 OI " tne U. S. 

 National Museum, taken by Prof. Leconte in Liberty County, on 



