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HELEONA FENESTRATA.
PLATE IV. Fig. 1.
Guerin.—Swainson's Zool. Illust., pl. 116.
This and the following genus belong to the family of the Anthroceridæ, of which many small and finely coloured species are known as occurring both in this country and on the continent. Several of these we have already characterised, and shall proceed to describe the only exotic examples which we can here afford space to introduce.
Heleona is characterised by Mr. Swainson as having the anterior wings papilioniform, that is, with the exterior margin as long as the posterior, or even longer; the hind wing lengthened perpendicularly, but short and rounded; the antennæ pectinate in both sexes. The typical species is the Phal. militaris (Cramer, i. pl. 29 B.; Roesel, Ins. Belust., vol. iv. p. 6. fig. 3; Donovan, Ins. of China, pl. 43), an elegant insect found in several parts of Eastern Asia. It expands nearly four inches; the upper wings with the inner half yellow, spotted with violet-blue, the apical half blue spotted with white; the hind wings yellow, with
