450 SYSTEMATIC ARRAXGEMENTS OF INSECTS. 



8. With four wings covered with meal-like scales (Lepidoptera). 



9. With four membranaceous wings, the wiugbones hairy (Tri- 



clwptera). 



10. With fom- nearly equal membranaceous reticulated wings (Neu- 



roptera). 



11. With four unequal membranaceous wings, the wing-bones running 



lengthwise ( Hymenoptera). 



12. With two wings folded lengthwise (Rliipiptera). 



13. With two wings not folded; mouth formed for sucking — flies 



(Diptera). 



14. With two or with no wings ; mouth witli long jaws — bird-flies, 



bat-flies (Omaloptera). 



Stephens's Classification. 

 I. Insects with Mandibles, rilfa«£Z/&wZato^. 



1. With hard wing-cases ( Coleoptera) . 

 a. Voracious (Adepliaga). 



Ground feeders (Geodephaga). 

 Water feeders (Hydrodephaga). 

 h, Cleansers (Bypophaga). 



Haunting water (Philhydrida). 



Feeding on carrion, or putrid wood (Necrophaga) . 



With short wing-cases (Brachelytra). 



c, Chilognathiform larvse. 



With clavate sublaminate antennae (Helocera). 

 With laminate antennse (Lamellicornes). 

 With filiform antennse (Sternoxi). 

 With setaceous or abmptly clavate antennae. 



d, Vermiform larvae. 



With a rostrum (Rhinclioplwra), 

 Without a rostrum (Longicornes). 



e, Anophmform ■? larvae. 

 Tarsi tetramerous. 

 Body elongate (Eupoda). 

 Body ovoid or oval ( Cyclica). 

 Tarsi trimerous (Trimeri). 



f, Heteromerous beetles (Heteromera). 



2. With short and somewhat crustaceous wing-cases — earwigs 



(DermajJtera). 



3. Witli coriaceous wing-cases ( Ortlioptera). 



4. With netted wings (Neuroptera). 

 a. Scorpion-flies (Panorpina). 



h, Day-flies (Anisoptera). 



c, Dragon-flies ( Lihellidina) . 



d, White-ants (Termitina). 



e, With large wings ( MegalopteraJ . 



5. With four hairy wings (TricJioptera). 



