3O BIRDS OF MASSACHUSETTS 



Springfield: " Common winter visitant." Wellesley : Frequent in spring 

 and fall. 



49. Larus delawarensis Ord. RING-BILLED GULL. 

 A not uncommon migrant in spring and autumn. 

 July 31 to October 19 ; June. 



Essex County : "Winter. Common." [?] Ipswich: " Not uncommon 

 migrant." Wellesley : "Casual migrant." Lake Cochituate. 



Note: Larus kumlieni Brewst. KUMLIKN'S GULL. Probably a not un- 

 common winter visitant. 



50. Larus glaucus Briinn. GLAUCOUS GULL. 

 A rare winter visitant from the north. 

 November 30 to April i. 



51. Larus leucopterus Faber. ICELAND GULL. 



A very rare winter visitant to the coast. There are but two 

 definite records : Boston Milldam, " an immature specimen [was 

 procured] on the 3ist of January, 1880. It was in company with 

 another of the same species and from twenty to thirty Herring 

 Gulls." 1 Near Boston, an immature specimen was taken in No- 

 vember, i882. 2 Peabody in his list (1839, p. 381) inserts it " on 

 the authority of Dr. [T. M.] Brewer who obtained it near Bos- 

 ton." 



Essex County : "Winter. Common." [An evident error.] 



52. Pagophila alba (Gunn.). IVORY GULL. 



Accidental from the far north : there is but one record : Mon- 

 omoy Island, one was shot after a northwest blow, December i , 

 1886, by one of the men of the Life Saving Station. 8 



53. Rissa tridactyla (Linn.). KITTIWAKE GULL. 



A common winter resident off the coast ; casual inland. 

 October 2 to March i. 



Bristol County : " Uncommon winter visitant off the coast ; common in 

 the fall." Cohasset : "Common in fall and winter." Essex County : 



1 Bangs; Bull. Nutt. Orn. Club, Vol. VI, No. 2, Apr., 1881, p. 124. 



2 Cory; Bull. Nutt. Orn. Club, Vol. Vil, No. I, Jan., 1882, p. 60. 



3 Gaboon; O. & O., Vol. XII, No. 12, Dec., 1887, p. 206. 



