The moths are slender-bodied; the wings large; of some the females have no wings. These are the _Hybernians_, including the Canker-worm, _Anisopterix vernata_. These caterpillars are very numerous and destructive; they do not feed gregariously, and are difficult to combat in that form. The pupæ are under ground, and, as the female moths are wingless, and must ascend the trees to deposit their eggs, we can destroy them in the perfect form by meeting them on the highway they have to pass. Ingenious devices have been invented for this purpose; among the most effective of these are vessels of oil, fastened closely around the bole of the tree. The moths emerge from the ground in early spring, but many come out during pleasant mild days in the winter, and some even in the autumn; so the remedies must be applied early to be of any use. Harris describes a smaller species as the _Anisopterix pometaria_. =Hybernia tiliaria=, or the Span-worm of the Linden, is abundant in June, growing to the length of an inch and a half. A belt of tar, applied to the trees, has been found effective in preventing the ascent of the wingless females; this needs renewing daily, until the season of their rising has passed. =Ellopia ribearia=, or the Currant-moth, was figured and described by Fitch as the _Abraxas? ribearia_, in New York Reports for 1856. The worm is light yellow, with black dots. It eats the leaves of currants and gooseberries, in June. The moth ascends from the ground in July; it is nankeen-yellow; quite a common insect in some parts of the country. It must have some natural enemies, for, where very abundant one year, it sometimes disappears altogether the next. Hand-picking is the only remedy known, and this is quite a tedious process. TORTRICES, DELTA MOTHS, OR LEAF-ROLLERS. The Leaf-rollers are a numerous tribe, and some of them are troublesome upon our cultivated trees and vines. They curl up the edge of the leaf upon which they feed, and fasten it with little bands of silk, and thus shelter themselves from the weather and from their enemies. They are naked worms, and generally light colored, and exceedingly active. Some live in the unfolding leaves and flower-buds, fastening them together so they cannot expand, while they devour the tender tissues. Some enter the young fruit, which they cause to ripen and fall prematurely. The moths are generally small, often prettily marked, and fly only in the evening. =Loxotænia rosaceana=, (_Harris_), is found soon after the buds of the apple begin to expand. They curl up and fasten them together, and do considerable damage. =Penthina oculana=, (_Harris_), has similar habits, and preys upon the apple; both must be killed by hand.