38 



The only abbreviations used in references contained in the list 

 are " B. N. 0. C," Bulletin Nutlall Ornithological Clah, and " O. 

 & 0.," Ornithologist and Oologist. 



Family Podicipidse — The Grebes. 



Only three species occur in Pennsylvania and New Jersey. 



1, Colymbiis holboellii (Reinh.). Holbcell's Grebe. 



Breeding Range — Arctic America and N. E. Asia. 



Winter Distribution — Southward on the Atlantic coast to Virginia. 



Rare winter visitant on the coast, most plentiful during the migra- 

 tions. One specimen was found dead at Atlantic City, Feb. 1, 1883, 

 by Mr. G. S. Morris, and several are recorded by Mr. Laurent from 

 Five-mile Beach (0. 4" 0., 1892). This species occurs also on the 

 lower Delaware, a specimen in the collection of Mr. AYitmer Stone 

 having been taken near Chester, Oct., 1891; while another, in the 

 collection of Mr. C. A. Voelker, was shot in the same locality, Feb., 

 1894. Stragglers hare sometimes been taken farther inland — one 

 in Lancaster county, Pa., March 25, 1847 {Libhart, Birds of Lane. 

 Co.), and several in Lycoming county (Koch). The specimen in 

 Mr. Voelker's possession is in full adult plumage, but the others we 

 have examined are in immature dress. 



2» Colyjubus auritus Linn. Homed Grebe. 



Breeding Range — Northern N. A., chiefly north of U. S. 

 Winter Distribution — Southward to S. Atlantic States. 



Winter visitant and more abundant in migrations, though not very 

 common or regular in its occurrence. In tlie vicinity of Philadel- 

 phia it is found mostly on the Delaware and the tide-water creeks 

 from November to May 3. Mr. Laurent records it as common at 

 Five-mile Beach, N. J., from late in October to March (0. 4" 0., 

 1892). 



S, JPodilynibus podiceps (Linn.). Pied-billed Grebe. 



Breeding Range — Whole of N. A. e.vcept extreme north and south. 

 Winter Distribution — Southward to S. A. 



Seen mostly during the migrations and less commonly in winter; a 



