Specimen Page of Staveley’s Insects. 
WINGS OF INSECTS, AND THEIR CLASSIFICATION. 43 
very broad, the outline being rather more than the quarter 
of a circle. The veins radiate Fig. 17. 
from a point in the thickened o 
part of the membrane, and the 
wing is packed first by being 
closed together like a fan and 
then transversely folded in two 
places (fig. 17). From this 
complicated double folding is aes of Earwig oneness 
derived the name of the order : id = aed 
to which the earwigs belong, : 
viz., EUPLEXOPTERA (ed, well, wAexros, folded ; mrepov, WIDZ- 
For figures of Order II., Euplexoptera, sce Plate IV., 
Jig. 1. 
To the earwig, the grasshopper, cricket, locust, and coun? 
roach (or blackbeetle of our kitchen) succeed. Resembling 
the earwig in the fan-like folding of the hind wing, they 
differ from it in having no transverse folding (fig. 18), and 
from this character of the Fig. 18. 
wing is derived the name 
of the order under which 
these insects are ranged ; 
namely, Orthoptera, or 
straight - winged (dpéds, 
straight ; mrepov, a wing.) Wing of Grasshopper (Acrida 
The fore wings, although Be sabepecatvany 
much thickened, are less thick and horny than those of 
either the beetles or the earwig, and are useful in flight. 
And here we come upon a most curious little appara- 
tus. The merry chirp of the house cricket and of the 
grasshopper are amongst our most familiar sounds, yet 
few inquire the nature of the instrument by which the 
little creature produces its pleasant music, This, the pri- 
