LEPIDOPTERA. 



289 



Drepanidae. As in the Drepanidae vein VII appears to be 

 four-branched, and the 

 course of vein II of the 

 hind wings is similar in 

 the two families, except 

 that in the Auzatidae this 

 vein anastomoses with 

 vein III beyond the discal 

 cell ; but the extent of 

 this anastomosis varies 

 greatly in different indi- 

 viduals of our species. 

 In the Auzatidae the 

 apex of the fore wings 

 is not sickle-shaped ; and 

 the branches of radius of 

 the fore wings coalesce 

 as in the Geometridae, " V112 



Veins HI 3 and HI 4 COal- Fig. 344.— Wings of Eudeilinea herminiata. 



escing to near the apex of the wing.* 



Family Drepanidae (Dre-pan'i-dae). 

 The Hook-tip Moths. 

 The members of this family are small, slender-bodied 

 moths, which can be easily recognized by the sickle-shaped 

 apex of the front wings (Fig. 345). An 

 approach to this form of wing is pre- 

 sented by some species of the Satur- 

 niidae and by certain Geometrids. But 

 the former are large, stout-bodied moths ; 

 and the latter differ in wing venation, 

 cubitus of the fore wings appearing only 



Fig. 345. — Platypteryx arcu 

 ata. 



* In the Drepanidae veins III2+3 and III4+5 do not coalesce from the 

 apex of the discal cell outward (Figs. 346 and 347); but veins III 3 and II I 4 

 anastomose for a greater or less distance near the apex of the wing, thus 

 forming an accessory cell. 



