462 MODERN CLASSIFICATION OF INSECTS. 



slenderness of the hind legs, the sides of the abdomen of the males 

 are furnished with an oblique elevated notched ridge {^fiQ' ^Q- 20.), 

 against which the femur acts, whilst the bladder-like abdomen evi- 

 dently assists in the sound. (See Charpentier in Silberm. Rev. Ent. 

 No. 18.) 



END OF THE FIRST VOLUME. 



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