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CLASSIFICATION. 67 



DESCRIPTION OF OKTIIOPTERA. 



^Ist. — Winff structure: Anterior wings, as a pair 

 of long and narrow sheaths (tegmina), tliickly 

 veined and overlapping at the tips. 



Posterior or second pair of wings, lirge and 

 thickly reticulated, and, when at rest, folded 

 longitudinally like a fan, and protected by 

 the anterior pair as sheaths. 



2d. — Mouth parts^ for chewing. The jaws always 

 terminated with hard edges, resembling teeth, 

 and moving transversely on each other. 



3d. — Transfonnatlovfi^ incomplete. Pupa active 

 and resembling the imago, but Avith only 

 rudimentary wings. No species aquatic in 

 anv staire of life. 



FAillLIES OF OKTnOPTEKA. 



Grillidffi (cricket family). 

 Locustarise (locust family). 

 Acrydii (grashoppers). 

 Phasmida (walking sticks or spectres). 

 Mantida) (praying mantes). 

 Blattaria3 (cockroaches). 

 Forficularias (earwigs). 



