I have indicated in this short paper where the types of my Geometrid species are to be found, to the best of my knowledge, and I have given such additional information as I am possessed of with regard to the species. I have followed the classification of Dr. Packard, except in a few instances where I have found reasons to prefer other names. I refer to my paper, Can. Ent., 8, 152, for a review of the synonymy of certain species. Two species, one described by Dr. Harvey (viz., Endropia Warneri), have been re-named by Dr. Packard, who calls Dr. Harvey's species Apiciaria. As to whether we must put the terminations aria and ata (accordingly as the ♂ antennæ are pectinate or not) I cannot attempt to decide. I think it is advisable to bear this rule in mind when naming species, but I would not change therefore any names already in use. Especially do I think it unadvisable to place the termination after a proper name. I should call the Endropia, E. Warneri, not E. Warneraria.