New North American Bees of the Genus Dufourea (Apoidea—Halictidae) Part III

Four new species and two new subspecies of the genus Dufourea have come to light since parts I and II of the series under the above title were written. Addition of these plus the recognition of D. spilura (Ckll.) as a valid species raise the total number of recognized species of American Dufourea to sixty-one. It is probable that several more will be found within the next few years. This is especially likely in the Sierra Nevada and Coast Range mountains of California where large areas have been inadequately collected for bees from March to May.