BOMBYCIDÆ.
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subdivision. Of those having the hinder wings produced into an angle, we are acquainted with only two species, Epimethea and Erythrinæ; and in the latter the peculiarity exists only in one sex. All the species with the hinder wings drawn out into a long tail are so dissimilar, that each must be referred to a different genus. In a brief and imperfect synoptical view, the two last mentioned sections may stand thus:—
A. Hinder wings with an angular projection posteriorly.
* In the male.
Gen. Arsenura.[1]—Species Erythrinæ. Fabr. Spec. Ins., ii. p. 169. No. 9.
** In both sexes.
Gen. Lomelia.[2]—Species Epimethea. Fabr. Drury's Exot. Ins., ii. pl. 13.
B. Hinder wings produced into a long tail.
Gen. Arctias (Leach).—Tail about the length of the body; fore wings subfalcate on their exterior edge.—Species A. Luna. Linn. Drury's Exot. Ins., i. pl. 14. fig. 1.
Gen. Eustera.—Tail very long and dilated at the extremity; exterior line of the fore wings curved outwards.—Species E. Argus. Fabr. Drury's Exot. Ins., iii. pl. 29. fig. 1.
Gen. Copiopteryx.[3]—Tail very long, divergent, and dilated at the extremity; fore wings truncated at the apex.—C. Semiramis. Fabr. Cramer, Pap. Exot., i. pl. 13, fig. A.
