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Parvipennis hatches in fourteen days in July — Twenty-six eggs laid 

 by parvipennis July 9— Parvipennis lays sixteen eggs July 8— 

 On July 10 nineteen eggs are laid by parvipennis— Position of 

 the male during coupling— The grasp of the male— His convul- 

 sive action during and before coitus - - . . jgo 

 Appearance of egg shells indicating that the embryo breaks the 

 shell longitudinally to escape— Mutilation not inherited in the 

 offspring of Tettix ornatus— Eighteen days' incubation— De- 

 formity of the tibise in parvipennis — The claws also absent on 

 the posterior tarsi — Tettigids taken for experiments — Salacious 

 habits of Tettigidea— Sexes remain long together— In Tettix a 

 short period at a time — Tettix granulatus in conjugation — Poly- 

 andry in Tettix ornatus - - - - - - 181 



Literature ---.-... jgj 



Explanation of Plates --.-... igj 



