In Papilio, 3, 159, 1883, I described Colias Hagenii as a new species. I related that Mr. T.L. Mead had brought this butterfly from Colorado, in 1871, and that we both were then satisfied that it was not Philodice; that in the summer of 1883; Mr. H. W. Nash, at Pueblo, Col., had sent me some chrysalids of this form, and I noticed that the dorsum was marked by two longitudinal lines, which seemed to indicate sub-dorsal lines in the larva, and which are not present in the larva of Philodice; that I wrote Mr. Nash to observe as to that, and he soon replied that the larvae he then had on hand did show sub-dorsal lines such as are characteristic of many larvae of Eurytheme; that I had been unable to get live eggs from Pueblo subsequently that year, owing to the heat which destroyed them en route, but that Mr. Nash had made observations on the ground, and sent on larvae in alochol which showed broad sub-dorsal bands, that, he said, in life had red running through them.