Catalogue of the Birds of Illinois. 203 



Order PYGOPODES. 



Faiiiilj PODICIPEDID^. 

 Genus Podiceps, Latham. 

 335. F. Jiolhdlll, Reinh. American Red-necked Grebe. Winter sojourner. 

 Genus Dytes, Kaup, 



*336. D. aiiritiis (Linn.) Ridgw. Horned Grebe. Chiefly transient, but 

 wintering- southward and a few breeding northward. 



337. D. nigricoUis califaniiciis (Heerm.) Ridgw. American Eared Grebe. 

 Winter sojourner. 



Genus Podiltmbus, Lesson. 



*338. P. j'JOf?/('(?/)i? (Linn.) Lawr. Thick-billed Grebe. Summer sojourner 

 northward; resident in southern counties. 



Family COLYMBID^. -Loons. 



Genus Coi.YMBL's, Linn:eus. 



*339. C. torquatiis, Brtinn. Great Northern Diver; Loon. Chiefly winter 

 sojourner, but nests very sparingly in extreme northern portion of the state. 



340. C. arcticus, Linn. Black-throated Diver. Rare winter visitant. 



341. C. septenlrioiialis, Linn. Red- throated Diver. Winter sojourner. 



