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Rh that an accurate account has not been given of the nature of these appendages, as their occurrence is so rare among this tribe of insects. It is probable, however, that the projected points are not stings properly so called, but merely sharp needle-like pieces, charged with some acrid or poisonous matter.

The arrangement and appearance of the tufts on the caterpillar of Limacodes Cœlestina, formerly alluded to, are so similar to those of D. vulnerans, that it is no way improbable that they may possess like properties. But with regard to this and other species of similar construction, this point can be ascertained only by the observation of living specimens.

ECNOMIDEA PITHECIUM.

PLATE XXI. Fig. 4.

Bombyx Pithecium, Abbot and Smith's Lepid. Georg., pl. 74.

insect belongs to another group nearly related to Limacodes, but even of more singular aspect in the larva state, insomuch that it becomes