I made application to Canadian lepidopterists for information about the occurrence of _Alope_, and soon ascertained by examples sent me that _Nephele_ with a pale atmosphere, but not at all indicative of a band, passed by the name of _Alope_. Thereupon I sent a typical _Alope_ to Mr. William Murray, of Hamilton, who kindly offered to make inquiry of his acquaintances in different sections of Ontario. He replies, 31st Dec, 1879: “I now send you my information. Of all my correspondents not one has ever seen an _Alope_ that has been taken in Canada, but _Nephele_ has been taken by all. I begin to think that _Alope_ is not to be found in Canada at any point.” Mr. H. H. Lyman writes from Montreal: “In July, 1876, I spent a couple of days at a farm near Freligsburg. P. Q., one mile north of the Vermont border, and found _Nephele_ very common. Most of the specimens taken showed a yellow ring about the eye-spots on primaries, but one of them shows on upper side a somewhat faint, but quite discernible, patch corresponding to the yellow band of _Alope_. Was at same place in 1877. _Alope_ was not seen either year.” Mr. Caulfield writes Mr. Lyman: “I have never taken a specimen of _Nephele_ showing any tendency towards _Alope_, nor have I seen any Canadian examples showing it.” Mr. Lyman adds that at Portland, Maine, where he collected several summers, _Alope_ was common as well as _Nephele_ and all intergrades. (To the west of New York, in the latitude of the belt spoken of, it is believed that the two forms fly together at least as far as Wisconsin. Prof. A. J. Cook writes that both are common in Michigan, south of the latitude of Grand Rapids. At Toledo, Mr. John Wilson writes that _Nephele_ is rare, and _Alope_ unknown, so far as appears. At Cleveland, O., Dr. J. F. Isom informs me that _Alope_ is very rare, but that _Nephele_ is abundant in some seasons. In south-west Ohio, Dr. H. K. Landis, of Columbus, writes that he cannot learn that either form has ever been taken. They are not mentioned in Mr. Dury’s list of butterflies found about Cincinnati. But in northern Illinois _Nephele_ is abundant and _Alope_ not found at all. So that somewhere between New York and Illinois, in Ohio and Indiana, _Alope_ seems to disappear, while _Nephele_ becomes the sole form; but whether the separation is abrupt or gradual is not ascertained. As the information which I have been able to gather is so meagre as regards the States west of New York. I shall confine my remarks to that State and New England.[1])