354 TRANSACTIONS OF THE [1895 



At Hagerstown it was noted as a rare transient and ques- 

 tioned as a summer resident (Small), while Dr. H. D. Mearns 

 gives it as "a rare summer visitant" in Somerset County Pa., 

 (Birds Pa., 269 and 284). 



Dendroica pensylvanica (659). Chestnut-sided Warbler. 



A common migrant from April 29 ('93, Gray) to May 25 

 ('92, Resler), and from August 15 ('90, Pleasants) to Septem- 

 ber 25 ('93, Gray). On October 18, '93, a remarkably large num- 

 ber of this species were observed. They, with other species, 

 fairly swarmed in an 8-acre piece of woods ; my note book 

 says : "The ground was covered with Towhees and Snowbirds, 

 the bushes were full of White-throats, Song Sparrows and Snow- 

 birds, while the trees were filled with Black-throated Blue, 

 Black-throated Green, and Chestnut-sided Warblers, Golden 

 and Ruby-crowned Ringlets, Robins and Blue Jays, — evidently 

 a first-class bird- wave." 



At Washington they are recorded from " April 28 to May 

 80 ('91), and from August 10 ('89 ; '94, Figgins) to September 

 29 ('89)" (Richmond). 



On July 4, '93 (Wholey), a pair were taken near the Blue 

 Mountain House, and on July 24, '93 (Gray), a pair with 

 " worms " in their bills were seen within 100 yards of High 

 Rock, showing that they breed on the Blue Ridge. On Dan's 

 Mountain they were fairly common from June 5 to 14, '95 ; 

 on the 9th I collected a nest with 4 eggs about half incubated. 



Dendroica castanea (660). Bay-breasted Warbler. 



Migrant, not common ; specimens have been taken as follows : 

 May 16 ('91, Blogg) at Franklintown, May 21 ('93, Wholey) 

 at Waverly, May 24 ('90, Pleasants) at Towson, and May 28 

 ('93, Wholey) at Waverly; September 20 ('93, Gray) at Cal- 

 verton, September 21 ('93, Pleasants) at Towson, and Septem- 

 ber 28 ('89, Resler) at Back River. 



