lies a slender horny piece thickened at the tips, in front of which is an erect bifid horny process, the upper division of which forms a slender and very acute hook.
The species is a native of New Holland. The specimen here figured from a drawing made for us by Mr. Westwood, is in the collection of the Rev. F. W. Hope.
EUSEMIA LECTRIX.
PLATE II. Fig. 2.
This sub-genus was proposed by Dalman in his monograph on Castnia for the beautiful insect here figured. He considered it as very nearly allied to Agarista, and such is certainly the case, since they agree in the structure of the antennæ, palpi, spiral tongue, veins, bridle, and general colouring of the wings. The principal difference is in the structure of the fore legs, which are sufficiently unlike to warrant the separation. The anterior thighs (as they appear in E. maculatrix) have not the strong brush of hairs, which is so conspicuous in Agarista,
