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262 THE INSECT WORLD. 
agriculture. ‘There are some of them which eat any caterpillars 
they may chance to meet, and even those of their own species, 















Fig. 253.—Catocala Americana. 
leaving nothing but the skin. Some of them surround them- 
selves with a light cocoon before becoming chrysalides, others 
bury themselves in soft well-pulverised soil. 


af AW 
Lt A =s 
eT AW \\ 
f 1] \\ \- 
OY 
Fig. 254.—Catocala paranympha. 
‘The family of Geometrineg, or Geometers, comprises moths of 
a middling size, and usually flying after sunset and during 
the night.* They frequent the alleys of damp woods, where 
they become the prey of the Libellule+ and other car- 
* A few species fly in bright sunshine.—Eb. + Dragon-flies.—Ep. 




