Note 27 — Part I. ON THE SEASONAL DIMORPHISM OF BUTTERFLIES.

[According to W. F. Kirby (Syn. Cat. Diurn. Lepidop.), the species is almost cosmopolitan, occurring, as well as throughout Europe, in Northern India (var. Timeus), Shanghai (var. Chinensis), Abyssinia (var. Pseudophlæas), Massachusetts (var. Americana), and California (var. Hypophlæas). In a long series from Northern India, in my own collection, all the specimens are extremely dark, the males being almost black. R.M.]