^74 THE STUDY OF INSECTS . 
In the typical forms, vein V a 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, 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 4 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 a . In one of 
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 arc 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 
. 1 1 . , . ... .... Fig. 325. —Brephos infans, male. 
the hind wings with reddish orange 
(Fig. 325). The specimen figured is a male. In the female 
1H3+4 
Fig. 324. —Wings of Brephos in/am 
