A constant succession of surprises has taken place during the year 1899, owing to the absence of species and even whole genera that I have taken in previous years in some abundance, their places being occupied by forms new to me. I thought that the list of Manitoba Lepidoptera by Mr. Hanham, now being published, would be fairly complete, considering the amount of material at his disposal; but my work of last summer, so far as I have identified the result, will add several species to the list, and I have yet a number of specimens, about which I am in doubt, to submit to Dr. J. B. Smith, who has very kindly undertaken the task of naming my new things.