LEPIDOPTERA. 207 



when at rest, but are distinguished by the peculiar venation 

 of the fore wings, vein III being five-branched, and all the 

 branches arising from the discal cell. The antennae are 

 enlarged into a club towards the tip. p. 364. 



Superfamily Hesperiina. 



EEE. The Butterflies. — Day-flying Lepidoptera that hold 



their wings erect when at rest, that have clubbed antennae, 



and that differ from the Skippers in the venation of the 



fore wings, some of the branches of vein III coalescing 



beyond the discal cell Superfamily Papilionina. 



F. Butterflies in which vein VII is apparently four- 

 branched. The Swallow-tail Butterflies, p. 375. 



Family Papilioxid.e. 

 FF. Butterflies in which vein VII is apparently three- 

 branched. 



G. Butterflies exhibiting no tendency to abortion of the 

 fore legs. 



The Pierids. p. 381 Family PiERID.E. 



GG. Butterflies exhibiting a marked tendency to abor- 

 tion of the fore legs. 

 The Gossamer-winged Butterflies, p. 3S8. 



Family Lyc.exid.e. 

 The Brush-footed Butterflies, p. 395. 



Family Nymphalid.E. 



TABLE FOR DETERMINING THE PRINCIPAL GROUPS OF 



LEPIDOPTERA. 



A. Wingless or with rudimentary wings. This division includes only 

 females. All males of Lepidoptera are winged. 

 B. The larvae case-bearers; the adult female remaining within the 



case to lay her eggs. p. 219 Psychid.e. 



BB. The larvae not case-bearers; the wingless adult not in a case. 

 C. The adult remaining upon her cocoon to lay her eggs; the 

 body of the adult clothed with fine hairs, p. 308. 



Lymantriid.e. 

 CC. The adult active, laying her eggs remote from her cocoon; 

 the body of the adult clothed with flattened scales, p. 270. 



Geometrina. 

 AA. Winged, fore and hind wings similar in form and venation, the 

 radius of the hind wings being, like that of the fore wings, five* 

 branched. (Fig. 238.) (Suborder Jugatce.) [See also AAA.] 



