CLASSIFICATION 39 



Mantidae, or mantises. 



Locustidae, or locusts. 



Phasmidae, or walking sticks. 



If possible, find- a sample of each and mount according to 

 directions. 



Note.— The walking stick and the cockroach, if easily obtained, 

 should be examined for external characteristics. 



Directions for using the tables of classification are given 

 in the Appendix, II. 



Cl.\ssification — From Comstock'. 



Table of Families of Orlhof'tcra. 



A. Posterior femora fitted for walking, i. e., resembling those of the 



other legs ; ovipositor with the subgenital plate concealed ; organs 



of flight of immature forms in normal position; insects mute. 



B. Anterior wings leathery, very short, without veins, meeting in 



a straight line; posterior wings, when present, folded to the 



middle of the anterior margin; tarsi three- jointed, the pulvillus 



wanting; cerci horny, resembling forceps Forficulidae. 



BB. Anterior wings parchmentlike, thickly veined; posterior 

 wings folded to the base; tarsi five-jointed; cerci soft, jointed or 

 without joints. 



C. Body oval, depressed ; head wholly or almost 'wholly with- 

 drawn beneath the pronotum ; pronotum shieldlike, transverse ; 

 legs compressed; cerci jointed; rapidly running insects. 



Blattidae. 

 CC. Body elongated ; head free ; pronotum elongated ; legs 

 slender, rounded; cerci jointed or without joints; walking 

 insects. 

 D. Front legs fitted for grasping; cerci jointed. 



Mantidae. 



DD. Front legs simple; cerci without ioints. .. .Phasmidae. 



AA. Posterior femora fitted for jumping, i. e., very much stouter or 



very much longer, or both stouter and longer than the middle 



femora ; ovipositor horny, free (except with the Mole crickets) ; 



organs of flight of immature forms inverted; stridulating insects. 



