In a brief period of time, extending from June 21 to August 12, 1924, the author endeavored to make a survey of the Odonata of Cheboygan and Emmet counties, Michigan. Particular attention was given to this group in the vicinity of the University of Michigan Biological Station on Douglas Lake, Cheboygan County. Two papers have been previously published on the Odonata of the Douglas Lake region. The first (O’Brien, 1910) contained a list of 23 species, all of them recorded from adult specimens and verified by Mr. E. B. Williamson. The second (Evans, 1914) contained a list of 43 species, of which 11 were recorded from adult material, 19 from naiads, and 13 from the literature only. Since these papers are somewhat incomplete and fragmentary, it was believed that the possibilities of the Odonata fauna were by no means exhausted; hence the 1924 collection. Also, a comprehensive account of the Odonata of Michigan is badly needed, and it is hoped that the present paper will serve as an introductory step toward this goal. The fluctuation of species from year to year must be considerable, to judge from collections made over this territory in past years (O’Brien, 1910; Evans, 1914). A synoptic table of the complete Odonata record of Cheboygan and Emmet counties follows.