When I was working on the Haploas, previous to the publication of my paper on “The North American Callimorphas” (Can. Ent., XIX, 181–191), I appealed to Mr. A. G. Butler for information in regard to Walker's types, and he very kindly sent me sketches of the types of Contigua and Confinis as then standing in the British Museum collection, but as what was shown as the former was practically the same as the latter, I wrote that I thought there must be some mistake, and sent a drawing of what we, in this country, understood to be Contigua. Mr. Butler, in replying, said I was quite right, and that Mr. Walker, with his usual carelessness, had got the Contigua label on the wrong specimen, and thanked me for calling his attention to the error, which he had corrected.