On pages 121–122 the generic term Lepisesia is twice written wrongly, “Lipisesia.” To my statement with regard to the food plants of the Smerinthinœ, must be added that several unocellated genera feed on forest trees, such as poplar, linden, oak, etc. I have taken our geminatus on willow; my statement as to fruit trees (Rosaceœ, Caryœ) gives the general food of Cressonia, Calasymbolus, Smerinthus and Paonias. I would likewise add to my remarks as to the sequence of the groups that they seem to me to form two series; the first embracing the Macroglossinœ, Chœrocampinœ and Smerinthinœ; the second the Acherontinœ and Sphinginœ; the members of each series resembling each other more than the members of the opposed series. With regard to my List, p. 126 et seq., I would say that the manuscript was in the main long completed, perhaps nearly a year before I received Prof. Fernald's excellent paper. After receiving it I merely so far corrected and added to my MSS.