84 FAMILY I. -EARWIGS. 



C. Tarsi four-jointed; ovipositor (when exerted) 

 forming a strongly compressed, generally 

 sword-shaped blade; the stridulating organs 

 of male limited to the anal area of the tegmina. 



6. Locustidse. 

 CC. Tarsi three-jointed; ovipositor (when exerted) 

 forming a nearh^ cylindrical, straight, or 

 occasionally up-curved needle ; the stridulat- 

 ing organs of the male extend across the anal 

 and median areas of the tegmina. 



7. Gryllidse. 

 Prof. Fernakl* gives a very handy short table to sepa- 

 rate the New England Orthoptera into families, in which 

 each figure on the right leads to the same one on the left: 



fHind legs longest; hind femora thickened; (jumpers). .4 



1 < Legs of nearly equal length; hind femora not thick- 



[ ened (runners) 2 



[Abdomen with forceps-like appendage at the end 



2 <j For£culidse. 

 [Abdomen without forceps at the end 3 



„ fBod}' oval and flattened Blattidce. 



\Body long and slender Phasmidse. 



. (Antennae shorter than the body Acrididae. 



\^Antenn£e longer than the body 5 



fWing-covers flat above, but bent sharply dowm at the 

 5 I sides Gryllidse. 



[Wing-covers sloping down on the sides Locustidse. 



FAMILY I. 



EARWIGS. 



[ForBcuUdse). 



These insects resemble beetles, and are so different from 

 true orthoptera that manj^ entomologists consider them as 

 members of a different order, the Dermnptera or Euplexoptera. 



They possess very small and leathery wing-covers or 



♦The Orthoptera of New England, by C. H. Fernal4,-A. M., Ph.- D., 1888. 



