The two counties which share the northern tip of the Lower Peninsula of Michigan, Emmet on the west and Cheboygan on the east, have long been taken to define the principal "region" under study by the University of Michigan Biological Station, situated since 1909 on Douglas Lake in Cheboygan County near the Emmet County line. Welch’s 1915 list of the Lepidoptera of the region included 43 species of Noctuidae; the present list includes 311. Unlike the first installment (1970) of my local checklist, which itemized 73 species in the six families preceding the Noctuidae, this one deals with so large and difficult a group that many of the species are unfamiliar and likely to be overlooked by collectors. Inability to identify many species when collecting at a light has meant that I doubtless passed some by undetected. A considerable number of species not listed here are known from adjacent counties (especially through the collecting of M. C. Nielsen in Otsego County to the south), and may be expected one day in the Douglas Lake region as well.