102 SYSTEMS. 



OUTLINE OF A SYSTEMATIC ARRANGEMENT OF INSECTS. 



INSECTS. 



Animals with exactly six feet, and three divisions 

 of the body, more or less distinct. 



Divided into 

 A. Winged Insects. B. Wingless Insects. 



A. WINGED INSECTS. 



Divided into 



I. Four Winged Insects, with Membranous 

 Wings ; II. Four Winged Insects, with the first pair 

 more or less thick or hard ; III. Two Winged Insects. 



I. FOUR WINGED INSECTS,ALL THE WINGS MEMBRANOUS. 



Divided into 



1. Those with powdery wings and a spiral sucker. 

 Butterflies and Motkt( l ) 



2. Those with the wing-ribs hairy. Caddis Flies or 

 Water Flies.(*) 



3. Those with unequal wings, the first and second 

 pair hooked 'together. Saw -Flies, Cuckoo -Flies, 

 Wasps, Bees, Ants, (male and female, the workers 

 having no wings) Ruby Tails, and Bee Parasites.^) 



4. Those with the wing-ribs netted like lace. Scor- 

 pion Flies, Day Flies, Dragon Flies, White Ants. 



Timber Lice, (some of which have no wings) Pearl 

 Flies, and Ant Flies. (*) 



(!) In Latin, Lepidoptera (LINN^US). 



(2) In Latin, Trichoptera, (LEACH). 



(3) In Latin, Hymenoptera, (LINNAEUS). 



(4) In Latin, Neuroptera, (LINNAEUS). 



