I am surprised to see in the May number of the Canadian Entomologist a criticism of my paper on “Argynnis” in a style which is not easy to reply to, and which is certainly not justified by the paper itself. Mr.Edwards seems to think that no one has a right to question his opinions on butterflies unitl they have seen the so-called types from which his original descriptions were made, and that the practical monopoly which he has lately held in the description of new species in the United States gices him the positon of an oracle.