55 



36. Stercorarius pomarinus (Tenim.). [697.] Pomarine Jaeger. 



Breeds in the far north, coming south to the Great Lakes in winter. 

 " Winter visitant to Lake Michigan" (Ridgway) ; " twice seen in Ne- 

 braska" (Aughey). 



37. Stercorarius parasiticus (Linn.). [698.] Parasitic Jaeger. 



Breeds in the far north, coming south in winter to the Great Lakes, 

 and even to Illinois (Ridgway). 



38. Stercorarius longicaudus Vieill. [699.] Long-tailed Jaeger. 



Breeds in the Arctic regions, coming south in winter to the northern 

 States; "casual winter visitant in Illinois" (Ridgway). 



40. Rissa tridactyla (Linn.). [658.] Kittiwake. 



A northern species, coming south in winter to the Great Lakes. It 

 has been noted from Minnesota (Hatch), and Illinois (Nelson); and 

 March 17, 1884, one was seen by Dr. P. R, Hoy at Racine, Wis. 



42. Larus glaucus Briinn. [660.] Glaucous Gull. 



Another northern species, appearing as a winter visitant at Lake 

 Michigan, and once taken as far south as Clay county, Tex. (Ragsdale, 

 Bull. K O. 0., Yol. VT, 1881, p. 187). Dr. P. R. Hoy took a fine speci- 

 men at Racine, Wis., March 17, 1884. 



43. Larus leucopterus Faber. [661.] Iceland Gull. 



Breeds in the far north, coining south in winter to the Great Lakes; 

 occurs regularly on Lake Michigan (B. W. Nelson). 



47. Larus marinus Linn. [663.] Great Blaclc-bacJcecl Gull. 



Breeds from the Gulf of St. Lawrence northward, coming south in 

 winter to the Great Lakes (Lake Michigan, Nelson). 



51a. Larus argentatus smithsonianus Coues. [666a.] Herring Gull. 



Breeds from southern Minnesota northward, and migrates over nearly 

 the whole of the Mississippi Valley. This species was seen at Chicago 

 in the winter of 1883- 7 84, and usually a few winter on Lake Michigan. 

 As a rule it is found in winter throughout Illinois and thence southward 

 to the Gulf of Mexico. The severe cold of January, 1884, drove it almost 

 entirely out of Illinois. One was seen at Saint Louis after the river be- 

 gan to be full of floating ice. It returned to Saint Louis January 29; 

 two days later a party of eighteen went north, and February 3 between 

 seventy-five and eighty-five went north above the Mississippi. At 

 Heron Lake, Minn., the first came March 24. They breed from Heron 

 Lake northward. There is a record of a large Gull, probably this spe- 

 cies, from Oak Point, Manitoba, April 21. 



At Chicago, 111., Herring Gulls were common throughout the winter of 

 1884-'85, and as the Mississippi river did not freeze over they remained 

 all winter at Saint Louis, Mo. Their migration at that place in the spring 

 of 1885 began February 27, and the next day they were seen going north 

 in regular migration wedge, taking their annual overland route just in 





