The table forming Appendix I contains the names of _all_ the British butterflies and larger moths, and shows their division into _Sections_, _Tribes_, _Families_, and _Genera_. This table is the result of most careful study on the part of leading entomologists, and shows how, in their opinion, the insects can best be arranged to show their relation to one another; and you cannot do better than adopt the same order in your collection. RHOPALOCERA PAPILIONIDAE _Euchlo[:e]_ NYMPHALIDAE _Papilio_ O O O _Argynnis_ O O O O O O O O O O O O O O O Machaon Rapae Cardamines Edusa O Selene PIERIDAE O _Leucophasia_ O _Aporia_ O O O O O O O v. Helice O O O Sinapis O Crataegi Napi _Gonopteryx_ O _Colias_ O Euphrosyne _Pieris_ O O O O O O O O O Daplidice O O Latona O O Rhamni O Hyale Brassicae Complete label lists can be purchased, printed on one side of the paper only. These, when cut up, supply you with neat labels for your specimens. If you intend to study the British _Lepidoptera_ as completely as possible, you may as well start at once with a sufficiently extensive cabinet, and arrange all the labels of your list before you introduce the insects. You will thus have a place provided ready for each specimen as you acquire it, and the introduction of species obtained later on will not compel you to be continually moving and rearranging the drawers. Probably the number of blank spaces will at first suggest an almost hopeless task, but a few years of careful searching and rearing will give you heart to continue your interesting work. Arrange all the insects in perpendicular rows. Put the names of each section, tribe, family, and genus _at the head_ of their respective divisions, and the names of the species below each insect or series of insects. The opposite plan, in which the circles represent the insects themselves, will make this clear.