12 ' THE MONTHLY BULLETIN'. 



Because of their ^on-^sef^ln(^s.s in snob a work as this, the following 

 orders will not he considered : 



TInjsaiiufa 



Collemhola 



Plecoptcra 



Epliemerida 



Odonata 



Mecopfera 



Trichoptera 



Siphonaptera 



ORTHOPTERA (Order). 



STRAIGHT-WINGED INSECTS. 



EARWIGS, COCKROACHES, PRAYING MANTIDS. WALKING STICKS, GRASS- 

 HOPPERS, KATYDIDS AND CRICKETS. 



All of the members of this order, with the exception of the praying 

 mantids {Mantid(e) and certain exceptions among the earwigs (ForficH- 

 lid(c), are destructive to vegetation and most of them are serious pests 

 to cultivated crops. Though most of them possess four wings, a few 

 genera and species have none at all. The fore wings are called tegmina 

 and differ from those of most insects in that they are leathery being 

 a means of protection for the delicate thin hind wings which are used 

 for flying. All the members have strong and well developed month- 

 parts for biting and chewing. The metamorphosis or change from the 

 young to the adult is gradual and scarcely noticeable. The first born 

 always resemble the adult, with the exception that they have no \vings 

 and undeveloped sexual organs. 



To follow out the systematic arrangement of this order, the families 

 are usually arranged as follows : 



L ^Forficulidce; 

 2. Blaftidm; 

 8. M ant idee; 



4. Fliasin>d(r : 



5. Acridildce; 



6. Locustidxc; 



7. Gryllidce. 



While practically all of these are of great interest and often of 

 economic value, only the last three are deemed of sufficient importance 

 to be included in a work of this character. These will be considered 

 in the order as given above. 



*The ForficitUdw are placed in a .^I'parate order Euplexoptcra by many entomologists. 



