1168 Eepoht of State Geologisj. 



Famu.y LARIDjE. Gulls and Teens. 



SUBPAMILY LARINjE. GULIS. 

 Genus RISSA Stkphens. 



7. (40). Eissa tridactyla (Linn.). 



Eittiwake Gull. 



Illinois and Wisconsin, rare winter visitor (Nelson, N. E. 111., p. 

 146; Eidgway, 111. Om., II., pp. 321-2); Ohio, rare winter visitor 

 (Wheaton, p. 549); Michigan, rare (Gribbs, p. 495); Illinois (WoodnifE, 

 in letter). 



Genus LARCS Linn^hs. 



8. (47). Larus marinus Linn. 



Great Black-backed Gull. 



Kent County, Mich., March 88, 1889, White. (Cook, Mich., p. 

 32.) Illinois, winter resident (Nelson, N. E. 111., p. 145); Ohio, rare 

 winter visitor (Wheaton, p. 547); Michigan, rare (Gibbs, p. 495). 



9. (51). Larus argentatus BriInn. 



Herring Gull. 



Eidgway (111. Om., Vol. II.) thinks its occurence doubtful. Illinois, 

 rare winter visitor (Kelson, N*. E. 111., p. 145). 



10. (58). Larus atricilla Linn. 



Laug'hing' Gull. 



Washtenaw County, 1 specimen, 1884, Watkins (Cook, Mich.); Illi- 

 nois, rare summer visitor southward (Eidgway Cat., p. "303); Michigan, 

 abundant (?) (Gibbs, p. 495). 



Genus XBMA Lkach. 



11. (62). Xema sabinii (Sab.). 



Sabine's Gull. 



Illinois, rare winter visitor to Lake Michigaii (Eidgway, 111. Om., 

 II., pp. 337-8) (Eidgway Cat., p. 202); Ohio, accidental on Lake Erie 

 (Wheaton, p. 553). 



