274 



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 

 (Fig. 324). In many gen- 

 era veins III and V^ c 

 the hind wings coalesc 

 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 

 Va of the hind wings. 

 In th' ' amily a similar 

 coax .xnce of veins III 

 and Vj does not take 

 place till after the loss 

 of vein V,. In one of 



Fig. 324. — Wings of Bref>hos infans. 



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, Brephos 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 wings with reddish orange 

 (Fig. 325). The specimen figured is a male. 



Fig. 325. — Brephos in/ans^ male. 



In the female 



