572 Annals of the Carnegie Museum. 



It came under our notice but once, May 28, 1900, when one was 

 seen in a meadow near the "Head." Mr. Sennett has two speci- 

 mens, taken August 7, 1888. 



[Aiumodramus henslowii. Henslow's Sparrow. 

 Careful search was made for this sparrow on the Peninsula, which abounds with 

 spots suited to the bird's needs, but without success, and it remains one of the spe- 

 cies yet to be detected.] 



158. Ammodramus nelsoni. Nelson's Sharp-tailed Sparrow. 

 This little-known sparrow was added to the avifauna of Pennsylvania 



on September 23, 1893, when a single bird was taken at the mouth 

 of Mill Creek by Mr. Bacon. This remained the only record up to 

 the season of 1900, when our field work showed it to be a rare 

 spring but quite common fall transient visitant on the Peninsula. A 

 single specimen taken in Niagara Pond May 24 was the only spring 

 record. In the fall it was first certainly identified September 13, and 

 was probably seen several days previous to that date, while there are 

 no records later than October 6. Although found about nearly all of 

 the ponds, Niagara and Big Ponds were its favorite resorts. The 

 birds were wont to frequent the thin growth of rushes along the 

 water's edge, where they would run and skulk and hide with the 

 utmost dexterity, flushing only when closely pressed, and soon drop- 

 ping down again, sometimes flying back to the growth of weeds and 

 bushes adjoining. In such cases they were usually easily secured by 

 noting where they alighted and "squeaking" them up into sight. 

 While there is no reason apparent why this species should not pass the 

 summer here, it is unlikely that it does so, judging from our present 

 knowledge of its distribution at that season, from which it appears to 

 be extremely local. 



\_Chondestes grammacus. Lark Sparrow. 



The eastward extension of the range of this species along the lake shore plain from 

 Ohio to Pennsylvania may reasonably be expected. It has been found breeding at 

 Oberlin, Ohio (McCormick, Auk, IX, 1892, 397).] 



159. Zonotrichia leucophrys. White -crowned Sparrow. 



A tolerably common spring and fall transient. May 1, 1894, is 

 the earliest available date in the spring, while a specimen secured 

 May 17, 1900, constitutes the latest date, as well as the only occur- 

 rence observed by us at that season. The first was seen in the fall 

 September 1 9, and the migration lasted about two weeks, or until 

 October 3. At this time it was fond of tracts of bushes and shrub- 



