2 7 8 THE STUD Y OF INSECTS . 
nized by the following combination of characters : Vein V 9 
of the hind wings does not arise much nearer to vein V, 
than to vein V 3 (as it 
does in the Geomet- 
ridae), veins II and III 
of the hind wings are 
closely approximate 
but do not coalesce along 
the second fourth, 
more or less, of the 
discal cell (Fig. 327), 
and veins III and V, 
of the hind wings do 
not coalesce beyond 
the apex of the discal 
cell. This last char¬ 
acter does not apply 
to the family as a 
whole, but merely to 
those that retain vein 
V 3 of the hind wings; 
in some of those in 
which this vein is lost, the coalescence of veins III and V, 
is carried beyond the apex of the cell. 
This is by far the largest of the families of the Geome- 
trina and contains the greater number of our larger species. 
The following will serve as 
illustrations of it:— 
The Notched-wing Ge¬ 
ometer, E?iiiomos magnarius 
(En'no-mos mag-na'ri-us), is 
one of the largest of our 
Geometrids. The larva is 
a common looper upon 
A L ciG. 328 .—Etinomos magnartus. 
maple, chestnut, and birch 
trees, and measures about two and one third inches in length 
Fig. 327. — Wings of Caripeta angustiorata. 
