124 



ORTHOPTERA. 



stridulate during flight, the others while at rest. To the first group be- 

 long the Crickets (Gryllidje) ; to the second, the Green or Long-horned 

 Grasshoppers (Locustarix) ; to the third and fourth, certain kinds of 

 Short-horned or jumping Grasshoppers (Acrydii)." (Scudder, 17, II., 



The true Orthoptera may be divided into four sections : — Saltatoria, 

 legs formed for leaping ; Ambulatoria, legs formed for walking; Rapto- 

 ria, fore legs formed for grasping ; Cursoria, legs formed for running. 



The Earwigs, Forficularitc, if considered members of this order, con- 

 stitute a fifth section. 



The first section, Saltatoria, includes three families. There is much 

 confusion regarding both the scientific and common names of these fami- 

 lies as shown by the following table : 



AUTHORS. 

 Latreille. 

 Leach. 

 ScnJder, 



FAM. I. 

 GRYU.IDES. 

 ACHETID.E. 

 ORYLLIDES. 



Crickets. 



GKYI.UD.«. 



Crickets. 



ACHETAD;1v. 



Crickets. 



CRYU.IU/E. 

 Crickets. 



FAM. II. 



LOCUSTARI/E. 

 URYLLID.-E. 

 I.OCUSTARI.*. 

 Green or Long- 

 horned Grasshop- 

 pers. 

 l.OCUSTARl^E. 



Locusts. 



GRYI.I.ID.E. 



Grasshoppers and 

 Katydids. 



I.OCUSTID.E. 



Grasshoppers. 



FAM. III. 



ACRYDII. 

 I.OCUSTIU/E. 

 ACRYDII. 

 Short-horned 

 or Jumping 

 Grasshoppers. 

 ACRYDII. 



Grasshoppers. 



LOCtJSTAD/E. 



Locusts. 



ACRIDID/1': 

 Grasshoppers. 



I. Saltatoria {Jmnpcrs). 



This section of the Orthoptera includes those spe- 

 cies that have the anterior and middle legs short, and 

 tlie posterior legs long, formed for leaping. The fem- 

 ora of the posterior legs are greatly thickened, so as 

 to give room internally for the action of large, strong 

 muscles, and channeled for the reception of the tibiae, 

 when at rest. The tibire are furnished, on the upper 

 and posterior surface with strong spines; the tibial 



