THE STUDY OF INSECTS. 



In the typical forms, vein V, of the hind wings is present, 

 and veins II and III of the hind wings are closely approxi- 

 mate, but do not co- 

 alesce along the second 

 fourth of the discal cell 



Vl (Fig- 3 2 4)- In many gen- 

 era veins III and V, of 

 the hind wings coalesce 

 beyond the apex of the 

 discal cell (Fig. 324). 

 This character is of use 

 in distinguishing certain 

 members of this family 

 from those of the En- 

 nomidae that retain vein 

 V., of the hind wings. 

 In that family a similar 

 coalescence of veins III 

 and V, does not take 

 place till after the loss 

 of vein V,. In one of 



XI 



FIG. 324. Wings of Brefhos infam 



our genera veins II and III of the hind wings coalesce 

 along the second fourth of the discal cell, as they do in the 

 Hydriomenidae ; but the absence of an accessory cell in the 

 fore wings at once distinguishes this genus from the Hydri- 

 omenids. The following species are our best known repre- 

 sentatives of the family. 



The Firstborn Geometer, BrepJios infans (Bre'phos in'- 

 fans). This interesting species has 

 been found only in the northeastern 

 part of our country ; its range is from 

 Labrador to New York. It is a 

 blackish-brown moth with the fore 

 wings marked with pinkish white and 



the hind wines with reddish orange 



FIG. 325. Brephos infans, male. 



(Fig. 325). The specimen figured is a male. In the female 



