259 



its occurrence at Gainesville, Tex., where it was taken May 16, 1884, 

 Mr. Lloyd says it is abundant in Texas from Castle Hill to Pecos Kiver, 

 and probably breeds. It has not been reported from any other part of 

 the district, but was taken in Dakota years ago by J. A. Allen. In the 

 fall of 1884 another specimen was secured at Gainesville, Tex., Septem- 

 ber 3. 



681. Geothlypis trichas (Linn.). [122.] Maryland Yellow-tliroat. 



The typical eastern Maryland Yellow -throat barely reaches the eastern 

 border of the Mississippi Valley, where the prevailing form is interme- 

 diate between it and the western. 



681a. Geothlypis trichas occidentalis Brewst. [ — .] Western Maryland Yellow- 

 throat. 



This lately-described subspecies is the common Maryland Yellow throat 

 of the western part of the Mississippi Valley from western Manitoba to 

 middle Texas. Throughout the middle and eastern portion of the Mis- 

 sissippi Valley the prevailing form is intermediate between it and typical 

 trichas, but, as Mr. Ridgway tells me, is nearer occidentalis than trichas. 

 Hence all the records relating to Maryland Yellow-throats have been 

 brought under the present subspecies. 



From its winter home in the Southern States and southward this 

 Warbler began its pilgrimage in the spring of 1884 early in March. By 

 March 13 it had appeared at Gainesville, Tex., but nothing more was 

 heard of it until April 18, when it arrived at Saint Louis. April 27 

 found it at Danville, 111., and April 30 was a day of great migration iu 

 Iowa, where it was reported from latitude 41° 38', latitude 41° 40', and 

 latitude 43° 15'; May 2 it had advanced to latitude 43° 43' in Minne- 

 sota 5 May 10 to latitude 45° 25'; and May 26 it had penetrated even to 

 Oak Point, Manitoba. The bulk was found eight to twelve days in the 

 rear of the advance. 



In the fall of 1884 the bulk of Maryland Yellow- throats was reported 

 as leaving Williamstown, Iowa, August 22, and the last six days later. 

 At Des Moines, Iowa, the last was Teported August 11. At Mount 

 Oarmel, Mo., the last one left September 22. 



In the spring of 1885 the earliest note came from San Angelo, Tex., 

 where the first was seen April 4, and the species was common the next 

 day. April 20 it appeared at Saint Louis, Mo., and Odin, 111. April 21 

 one was noted from Paris, 111. During the three days from April 23 to 

 April 25 Maryland Yellow-throats were seen at Emporia, Kans.; Iowa 

 City, Iowa; Newton, Iowa; Grinnell, Iowa; and Hennepin, 111. May 

 3 found them at TJnadilla, Nebr., and a further advance (May 8 and 9) 

 brought them to Huron, Dak.; Ooralville, Iowa; La Porte City, Iowa; 

 Waukon, Iowa; and Lanesboro, Minn. The next advance occurred 

 May 14, bringing them to Delavau, Wis. ; River Falls, Wis. ; Heron 

 Lake, Minn.; and Elk River, Minn. May 16 one was seen at White 

 Earth, Minn. The bulk came to Saint Louis April 24, and the species 

 was most abundant there April 27. 



