220 Trails. Acad. Sci. of St. Louis. 



the remarkable late spring of 1907 to June 3. Its fall migration 

 reaches us the middle of September, becomes brisk about Octo- 

 ber 1 and continues to the middle of the month, latest date being 

 October 20. 



648.a. Compsothlypis americana usneae Brewster. North- 

 ern Parula Warbler. 



Sylvia americana. Sylvicola americana. Parula americana. Blue Yellow- 

 back. 



Geog. Dist. — Eastern United States and British Provinces; 

 breeding from the interior districts of Virginia and Maryland 

 northward to Maine, Anticosti, New Brunswick and northern 

 Ontario. 



*648.b. Compsothlypis americana ramalinae Ridgw. 

 Western Parula Warbler. 



Geog. Dist. — Mississippi Valley, north to southern Michigan, 

 across Wisconsin to Minnesota; west to eastern Nebraska 

 and through Kansas, Indian Territory and Texas. These sub- 

 species have lately been separated from the typical americana, 

 which breeds locally in the Gulf States from Alabama to Florida 

 and along the Atlantic slope to District of Columbia, probably 

 to New Jersey and New York. Since the differences in the 

 winter plumage are so slight that nobody can tell the three 

 subspecies apart with certainty, their winter home can only 

 be given for all of them together. They have a wide range 

 throughout the West Indies, and through eastern Mexico to 

 Nicaragua. 



Our Missouri bird, which was until 1897 simply americana 

 and then segregated as usneae, must now be referred to the 

 new subspecies ramalinae, but it is possible that the northern 

 subspecies usneae visits the state in transit from and to Mexico. 

 Observers should be on the look-out for it during migration 

 time. The Parula or Blue Yellow-back is one of the first war- 

 blers to appear at its breeding stations; it is a fairly common 

 and generally distributed summer resident in the overflow of 

 the peninsula as well as in the valleys of the Ozarks and along 

 the water-courses everywhere, though less and less common 

 as we go northwestward in the prairie region. It reaches Mis- 

 souri in the southeast in the last week of March (Poplar Bluff, 

 March 28, 1896). Earliest date for St. Louis is April 10, 1887, 



