The Large Metal-mark is called by science _Calephelis borealis_, but it deserves the latter name only in the sense that it is more northern than its allies. It has been collected as far north as New York and Michigan, but it seems to be very seldom found, at least in eastern regions. It expands a little more than an inch. The general color of the wings is yellowish brown, marked with blackish dots and lines, together with rows of steely spots on the under surface. In this case also the life-history is unknown. [Illustration: _See page 236_ THE SNOUT BUTTERFLY IN FLIGHT AND AT REST] [Illustration: _See page 62_ GIANT SWALLOWTAIL JUST OUT OF THE CHRYSALIS] [Illustration: _From a drawing by W. I. Beecroft_ _See page 233_ THE MONARCH BUTTERFLY Caterpillar feeding; caterpillar hung up for pupation; chrysalis, and adult] THE GOSSAMER-WINGS FAMILY _Lycaenidae_ The daintiest and most delicate of all our butterflies are included among the Gossamer-wings. Their bodies are small and slender, their antennae ringed with white and almost threadlike, their wings thin and of exquisite beauty. Many of them are marked with the slenderest of tailed projections from the hind wings. When the face is viewed from in front it is seen to be much narrower than its height. At the insertion of the antennae the eyes are notched, and they are also more or less surrounded with white scales. Most of the caterpillars have oval, slug-shaped, smooth bodies, with the under surface flattened, and very small heads, which in many species can be extended by means of an extensile neck. The chrysalids are held in place by silken threads both at the tail and over the middle. They are rounded, short, and stout. Notwithstanding their small size, the Gossamer-wings are among the most spritely of all our butterflies. They seem indeed winged sprites, playing everywhere, in fields and open woods, along roads, lanes, and brooks, in dooryards and gardens--wherever, in fact, a bit of open space invites their presence. Not alone upon the wing but even when at rest does their liveliness appear. For most of these butterflies have the curious habit of keeping the hind wings in motion after alighting, rubbing them against each other in a vertical plane or "moving them backward and forward when half expanded." These habits are so fixed that when one sees a butterfly thus engaged one can pretty certainly conclude it is a member of this family. The Gossamer-wings are commonly separated into three rather distinct tribes--the Hair-streaks, the Coppers, and the Blues. The characteristic features are these: Three branches arising from the radius of each front wing. Under surface of hind wing commonly marked with threadlike streaks: the Hair-streaks.