HYPOTHETICAL LIST. 



The following list of species which have not been, as yet, positively 

 reported from the State, is composed of those forms which have been 

 iaken in neighboring States, or whose known range seems to include 

 Indiana, Some of them, it will be noticed, are of very rare or acci- 

 dental occurrence in the locality where they have been found, and pos- 

 sibly may not be found at all within our limits. For the sake of 

 abbreviation references are made as follows: 



RIDGWAY CAT. Ridgway's Catalogue of the Birds of Illinois, 

 Bulletin No. 4, Illinois State Laboratory of Natural History. 



RIDGWAY, ILL. ORN. Ridgway's Ornithology of Illinois, Vol. 

 I., 1889; Vol. II., 1895. 



RIDGWAY MANUAL. Ridgway's Manual of North American 

 Birds, Philadelphia, J. B. Lippincott Co., 1887; revised edition, 1896. 



GIBBS. Gibbs' Annotated List of the Birds of Michigan, Bulletin 

 of the U. S. Geological and Geographical Survey of the Territories, 

 Vol. V., No. 3. 



WHEATON. Dr. Wheaton's Report on the Birds of Ohio, Geo- 

 logical Survey of Ohio, Zoology and Botany, Vol. IV. 



BECKHAM. Beckham's List of the Birds of Nelson County, Ken- 

 tucky; Kentucky Geological Survey, 1885. 



NELSON, N. E. ILL. Nelson's Birds of Northeastern Illinois, 

 Bull. Essex Institute, Salem, Mass., 1876. 



NELSON, S. ILL. Nelson's Notes upon Birds observed in South- 

 ern Illinois, between July 17 and September 4, 1875, Bull. Essex 

 Institute, June, 1877. 



COOK, MICH. Cook's Birds of Michigan, April, 1893. ' 

 FAMILY PODICIPIDJE. GREBES. 



UKNUS vECHMOPHORUS COUKS. 



1. (1) -ffichmophorus occidentalis (LAWR.). 



Western Grebe. 



I am now satisfied that this species was erroneously placed in my 

 list of 1890. 



