CONTENTS. xxvu 



LETTER XXIII. 



MOTIONS OF INSECTS continued. 



LETTER XXIV. 



NOISES PRODUCED BY INSECTS - .... 484502 



While in motion --.... 434 



While feeding, &c. -.-... 488 

 In calling, commanding, or giving an alarm. .... 489 

 As expressive of fear, anger, sorrow, love, &c. .... 491 



By Beetles - 492 



Field Bugs -.... 490 

 Moths . . . . . . .493 



Bees,&c 493 



Grasshopper tribe - . . 494 



Crickets 495 



Locusts, &c. . . . . ... 497 



Cicada?. &c. -..... 499 



LETTER XXV. 

 LUMINOUS INSECTS ---... 503 515 



Glow-worms ~ - .... r/y> 



Fire-flies 



