THE ENTOMOLOGIST. 



No. 92.] JULY, MDCCCLXXI. [Price 6d. 



Answers to Correspondents. 



SCALE-INSECTS. 



a. Male scale-insect of the Cactus [Coccus Cacti), the cochineal of 

 commerce, magnified, and with wings extended, h. The same, natural size, 

 with the wings closed, c. Female scale insect of the vine {Coccus Vitis), 

 d. Female scale-insect of the rose. All these females are represented of the 

 natural size. 



The Scale-insect or Mealy-hiig. — Two generations of men 

 have been born, and most of them have passed away, since 

 Rusticus, of Godalming, published his account of the Coccus 

 Vitis, the scale-insect or mealy-bug of the vine ; and it was 

 reprinted, at p. 123 of his collected letters, under my own 

 personal superintendence in 1849. Rusticus was by no 

 means the first author who had studied these strange insects : 

 amongst others I may mention the illustrious Reaumur, who 

 had devoted one of his admirable * Memoirs' to its life- 

 history exactly a century earlier; and our own Haworth has 

 given some interesting particulars of its doings, at p. 307 of 



VOL. V. X 



