114 DAVENPORT Ac ADKMN OF NATURAL SCIENCES. 



Check List of 1882. (C); and the check list of the American Orni- 

 thologists' Union of 1886. (U). 



Order PYGOPODES. Diving Birds. 

 Suborder PODICIPEDES. Grebes. 

 Family PODICIPID.^. Gri 



- COLYMBUS Linn. it-. 

 ienus DYTKS Kaup. 

 [B 706, R 732, C848, V 3.| 

 Colymbus auritus Linn. Horned Grebe. A rather common mi- 

 grant: not as yet observed breeding within ;he limits of the State. 



[B 707. R 733^ C 850, C 4.] 

 Colymbus nigricollis californicus (Heerm. 1. American Eared 

 Grebe. ( )ccurs in some portions of the State, but is not very common. 



Genus PODILYMBUS Lesson. 

 [B 709, R 735, C 852, V 6.] 

 Podilymbus podiceps (Linn.). Pied-biller] Grebe. Common sum- 

 mer resident; breeds in "'sloughs.'' On June 2. 1885, a fine set of eggs 

 was taken in a grassy marsh near Des Moines. The nest was com- 

 posed of decaying vegetable matter, and was placed in the water 

 among the stems of Indian rice (Zizania aquatica ). It was about 

 fifteen inches in diameter, and raised about three inches above the sur- 

 face of the water. In the center of this mat, or nest, was a slight 

 depression in which the eggs were placed. 



Si border CEPPHI. Loons and Auks. 



Family URINATORID.^. Loons. 



Genus URINATOR Cuvier. 



[B 698, R 736, C 840, L" 7.] 



Urinator imber (Gunn.). Loon. Migratory; rather common. 



Said to breed in the northern part of the State, in the vicinity of the 



larger "lakes." 



Order LONGIPENNES. Long-winged Swimmers. 



Family LARID/E. Gulls and Terns. 



Subfamily LARIX.F. Gulls. 



s LARUS Linn 

 [B 661, R 666 a, C 773. U 51 <i.) 

 Larus argentatus smithsonianus Coues. American Herring Gull. 



