Editor's Note: Eighty years ago when this article was published, all of the species mentioned were considered exceedingly rare in Minnesota. During the intervening years, however, many have become much more common and widespread — some exceedingly so. Only a few remain as rare as they had been in Kilgore's day. For many species, Kilgore has made statements concerning early observations or final occurrence dates but without offering citations. For clarity and completeness, in most of those cases, I have added superscripts to his text which then reference original sources. These are listed at the end of the article. Of course, I can only specidate that they are the same that Kilgore used, but each does refer to original published accounts available to him. Also, please note that this paper is currently and erroneously attributed to Walter Breckenridge in some library catalogs. —AXH.
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