37 



Beach, February 6, 1898, a nearly pure white skin taken by Mr. 

 R. L. Peavey, and examined by the writer, and later by Dr. 

 Jonathan Dwight, Jr. 



20. Larus kumlieni. Kumlien's Gull. 



Represented on Long Island by a single specimen, (Braislin, 

 Auk, xvi, p. 190). This is an immature bird and was examined 

 originally by Mr. William Brewster who was inclined to believe 

 it of this species but deemed it w^ise to refer it to the former 

 until sufficient data became available to determine the question 

 without a doubt. This work has now been done and the 

 status of this specimen determined by Dr. Dwight (Auk, 

 xxiii, 1906, p. 37; see also Braislin, Auk, xxii, 1905, p. 168). It 

 was shot by a gunner March 8, 1898, while stooling for Old- 

 squaws on the ocean, several miles from land. 



21. Larus marinus. Great Black-backed Gull. 

 Common in winter, not usually arriving in numbers much 



before Christmas. Nov. 3 (Rockaway) to March 13 (Rock- 

 away) . 



22. Larus argentatus. American Herring Gull. 

 Permanent resident, though not at the present time a breeding 



bird. Abundant from October to April. During late years 

 the number of Herring Gulls which pass the summer on Long- 

 Island is increasing. The flocks noted contain birds of vari- 

 ous ages and stages of plumage. Formerly a few were accus- 

 tomed to summer at the eastern end of the island only, but 

 during the past two years they are not rarely seen along all 

 parts of the south shore during the summer. In winter an 

 unnumbered multitude of these gulls passes the season here. 



23. Larus delawarensis. Ring-billed Gull. 



A regular transient visitant; often abundant in autumn; 

 rare or casual in winter and summer. Sept. 5 (Freeport) to 

 Nov. 12 (Rockaway); and March 27 (N. Y. harbor) to May 

 L5 (Rockaway). 



