xii ILL USTRA TIONS. 
PAGE 
Carnivorous Beetles, Dyticus marginalis, and the whirligig 
beetles . 257 
Daddy-long-legs, showing the balancers ..... 262 
Common Gnat, grub, pupa, insect emerging and gnat on the 
wing 264 
The Hill Ant, Formica rufa, and House Ant, Myrmica molester 
and their structure . . . . . . . 271 
Ant's Head and Foot, showing the mouth-parts and the leg-combs 273 
Section of an Ants' nest, from Figuier 279 
Cleared disk of the agricultural ant's nest . • « • £95 
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