to the surface of the water, 'where the P/i rp ganea, now complete, deserts its tube, and enjoys the sweets of the country,. fluttering for a short time upon trees and plants, and then performs its last act of existence, by depositing its eggs in the waterS The larvae of the different species, make use of various materials in forming their tubes; some of them enclose themselves in the water-lentil, cut out into regular squares, and fitted one to another. Swallows feed upon them :• they are also a favourite food with the trout, and are, in consequence, lrcquently used as baits for fishing.

One of the largest kinds is the Phryganea grand/s. Its general aspect resembles a moth: the upper wings are grey, marked by various streaks and specks of different shades, whilst the under ones are of a yellowish brown, and serni-trmnsparent.

The next genus,.. lernerobius, fakes its name from the shortness of its existence, which, however, continues several days..

The most common. species, the ilernerobius perla, is an insect of extreme beauty. It is most common in the summer season ; and is a slender-bodied fly, of a grass-green, with bright gold-coloured CyCS and fiur large, transparent, oval wings, with a fine net-work of pale green

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