BOMBYCID^. J 25 



subdivision. Of those having the hinder wings 

 produced into an angle, we are acquainted with 

 only two species, Epimethea and Erythrince ; 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 imper- 

 fect synoptical view, the two last mentioned sections 

 may stand thus : — 



A. Hinder wings with an angular projection posteriorly. 



* In the male. 



Gen. Arsenura.* — Species Erythrince. Fabr. Spec. Ins., ii. 

 p. 169. No. 9. 



* * In both sexes. 



Gen. Lomelia. *f- — Species Epimethea. Fabr. Dairy's Exot. 

 Ins., ii. pi. 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. Dairy's Exot. Ins., i. pi. 14. fig. 1. 



Gen. Eustera. — Tail very long and dilated at the ex- 

 tremity ; exterior line of the fore wings curved out- 

 wards. — Species E. Argus. Fabr. Drury's Exot. Ins., 

 iii. pi. 29. fig. 1. 



Gen. Copiopteryx. % — Tail very long, divergent, and dilated 

 at the extremity ; fore wings truncated at the apex. — 

 C. Semiramis. Fabr. Cramer, Pap. Exot., i. pi. 1 3, fig. A. 



* From a^iTiv, mas, and ovga, cauda. 



f An ancient proper name. 



X From xuTiov, renins, and <rrUv%, ala. 



