BOMBYCID^. ] 25 
subdivision. Of those having the hinder wings 
produced into an angle, we are acquainted with 
only two species, Ephnethea and Erythr'mcG ; and 
in the latter the peculiarity exists only in one sex. 
All the species with the hinder wings drawn out 
into a lono- 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. Arsexura.* — Species ErytlirincB. Fabr. Spec. Ins., ii. 
p. 169. No. 9. 
* * In both sexes. 
Gen. LoMELiA. + — Species Epimethea. Fabr. Drury's Bitot. ^ 
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. Drury'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. Ij: — 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^a-iv, mas, and ov^ec, cauda. 
+ An ancient proper name. 
t From KidTtovt remus, and ^ri^v^, ala. 
