ORDER CHARADRIIFORMES. 135 



Subgenus HYDROCOLOEUS Kaup. 



Hydrocoloeus Ivaitp, Skizz. Entw.-Gesch. Eur. Thierw., 1829, 113. Type, 

 by subs, desig., Larus minutiis Pallas (Gray, 1842). 



• Larus minutus Pallas. Little Gull. [60.1.] 



Larus minutus Pallas, Reise Russ. Reichs, III, 1776, 702. (Circa alueos 

 majorum Sibiriae fluminum = Berezof, Tobolsk, Siberia.) 



Range. — Breeds in northern Europe and Asia from Iceland to the Sea of 

 Okhotsk. South in winter to the Mediterranean. Casual in northern India, 

 the Faroes, and interior central Europe; accidental in Maine (St. George, 

 August 12, 1904;! Scarborough, July 20, 1910 2), New Jersey (Pt. Pleasant, 

 August 11, 1929; 3 Point Newark, May 12, 1929;^ Staten Island, May 6, 

 1929 ^), and New York (Fire Island, September 15, 1887; ^ Rockaway Beach, 

 May 2, 1902; ^ Easthampton, January 2, 1930 "). 



Subgenus BLASIPUS Bruch. 



Bldsipus "B[ona]p[arte]," Bruch, Journ. fiir Om., I, No. 2, March, 1853, 

 108. Type, by monotypy, Larus bridgesi Fraser=L. modestus 



TSCHUDI. 



Larus heennanni Cassin. Heennann's Gull. [57.] 



Larus Heermanni Cassin, Proc. Acad. Nat. Sci. Phila., VI, No. 5, Sept.- 

 Oct., 1852 [Dec. 31], 187. (San Diego, California.) 



Range. — Breeds on the west coast of Mexico and on many islands in the 

 Gulf of California south to Las Marietas; also on San Roque Island, lat. 27° 

 on the Pacific side of Lower California. Widely distributed after the breeding 

 season from southern British Columbia to Guatemala. Reduced in numbers 

 in late years. 



Genus PAGOPHILA Kaup. 



Pagophila Kaup, Skizz. Entw.-Gesch. Eur. Thierw., 1829, 69, (196). 

 Type, by monotypy, Larus eburneus Phipps=L. albus Gunnerus. 



Pagophila alba (Gunnerus). Ivory Gull. [39.] 



Larus albus Gunnerus, in Leem, Beskr. Finm. Lapper, 1767, 285 (note), 

 (northern Norway.) 



1 Norton, Auk, XXXIII, 1916, 377. 



2 Norton, Auk, XXVII, 1910, 447. 



3 Edwards, Auk, XLVI, 1929, 532. 

 * Eaton, Auk, XLVI, 1929, 376. 



5 Chapin, Auk, XLVI, 1929, 377. 



6 Dutcher, Auk, V, 1888, 171. 



' Brashier, Auk, XX, 1903, 52. 



8 Helmuth, Auk, XLVII, 1980, 528. 



