BIRDS OF SOUTH DAKOTA 87 



So far as the writer is aware, only two lists of birds have 

 been previously published for the southeastern corner of South 

 Dakota, although Coues included many notes in his work on 

 "The Birds of the Northwest" which probably belong- to this 

 general region. One of these lists was written by Mr. Agers- 

 borg and published in 1885.^ This list includes 226 named 

 forms, some of which, however, belong in an hypothetical list, 

 so far as the actual records are concerned. That is, some species 

 were included on the strength of their occurrence across the 

 river in Nebraska. The list is based upon observations made 

 in Clay county, and portions of the adjoining counties of Yank- 

 ton, Union, Lincoln, and Minnehaha. The paper does not indi- 

 cate to what extent Union county was covered in field work, 

 and one is naturally led to assume that it was limited in the 

 main to the portions bordering Clay county. 



The second list, by Dr. Visher,^ covers Clay county only, and 

 includes 255 forms. Although the list covers practically the 

 same region as did Agersborg's, yet thirty years had elapsed 

 between the two lists, and there are numerous important differ- 

 ences. A comparison of these two lists w^ould be interesting, 

 and the writer had entertained some thought of attempting 

 such a discussion; but the limits of the present paper will not 

 permit. 



For convenience and accuracy the balance of the paper will 

 be presented in two parts. 



PART I. 



In this division are listed a number of records for the state 

 of South Dakota at large, not including Union County. 



1. American Merganser. Mergus americanus. Mr. Ander 

 son received one specimen for mounting on January 5. 1907, 

 from Parker. 



2. Red-breasted ^lerganser. Mergus serrator. IMr. Ander- 

 son received one from Zeeland, North Dakota, on May 20. 1914. 

 Although this locality is just beyond the boundary of South 

 Dakota, it is deemed desirable to include it in this list. 



iThe Birds of Southeastern Dakota. By G. S. Agersborg. Revised by 

 Prof. W. W. Cooke. Tlie .Auk. II, pp. 276-279, 1885. 



=A I..ist of the Birds of Clay County, Southeastern South Dakota. By 

 S. S. Visher, Ph. D. Wils. Bull., XXVII, pp. 321-335, 1915. 



