12 INTRODUCTION. 



Orders. Eepresetitatives. 



Neuroptera. Dragon-flies, etc. 



Trichoptera. Caddis flies. 



Hymenoptera. Bees, wasps, ants, etc. 



Strepsiptera. Bee parasites. 



Lepidoptera. Butterflies and moths. 



Homoptera. Froghoppers. 



Heteroptera. Bugs. 



Aphaniptera. Fleas. 



Diptera. Flies. 



Westwood rejects the Lice and Springtails from his work, not 

 regarding them as true insects. The principal names or synonyms 

 not mentioned above, which have been proposed for Orders of 

 insects, are as follows, Westwood's (or English) equivalents being 

 added : 



Dermaptera. Orthoptera. 



Dermaptera. Euplexoptera. 



Dictyoptera. Cockroaches. 



Thysanura. Springtails. 

 Collembola. 



Parasita. Lice. 



Anoplura. Lice. 



Mallophaga. Bird lice. 



Homaloptera. Forest flies. 



Siphonaptera. Aphaniptera. 



Ehipiptera. Strepsiptera. 



Achreioptera. Beaver parasites. 



Pseudo-Neuroptera. Neuroptera, etc. 



Of late years the tendency has been to again reduce the 

 Orders to seven, viz. Coleoptera* (including Strepsiptera), Orthoptera^ 

 (including Euplexoptera and Dictyoptera), Neuroptera\ (including 

 Trichoptera, Thysanura, Collembola, Mallophaga, and Thysanoptera), 

 Hymenoptera] Lepidoptera, Hemiptera, or Rhynchota (including the 

 sub-orders Hemiptera- Heteroptera and Hemiptera- Homoptera, and 

 the Anoplura), and Diptera (including Aphaniptera, and possibly 

 Achreioptera), and this arrangement will be followed in the present 

 work. The first four Orders, which possess jaws in the perfect 

 state, are sometimes called Insecta Mandibulata, and the remainder, 

 which are provided with a sucking proboscis, are called Insecta 



