PREFACE. VU 



described species. I therefore beg to acknowledge that 

 for this part of the book I am indebted to the co- 

 operation of Mr. Janson, and to join to my thanks to 

 himself my acknowledgment and thanks also to the 

 scientific specialists who kindly gave their assistance 

 in cases of difficulty. To M. Signoret (Paris), by 

 whose recent decease entomological science has suffered 

 such a severe loss, I am indebted for identification of 

 Icerya purchasi and Lecanium hesperidum ; to M. Bigot 

 (Paris), for confirmation of the Hippobosca Struthionis 

 as being a species previously undescribed ; to Dr. J. S. 

 Baly, for identification of Dibolia intermedia, and also 

 for determination of the species now named by him 

 Iphidea capensis as being previously undescribed ; and 

 I have also to offer my thanks to Mr. F. P. Pascoe 

 for kindly assisting identification of Longicorn beetles 

 by lending specimens from his collection for com- 

 parison, and to Mr. W. L. Distant for identification of 

 Ptyelus grossus: and likewise to Prof. Westwood, for 

 examining and identifying for me the Trilocha ficicola, 

 and also the specimen of Ceratitis citriperda figured at 

 page 50, with its halberd-shaped head processes. 



Most of the specimens and observations were 

 forwarded to me through the hands of Mr. S. D. 

 Bairstow, the originator of the work, who took great 

 trouble in procuring information, and who also furnished 

 valuable observations of his own, especially on the 

 life-history of the Icerya purchasi or "Australian Bug," 

 and its parasites, one of which the Coccinella or 

 Ladybird Beetle, the Rodolia icerya (see page 91) has 

 now, consequently on Mr. Bairstow's observations, been 

 transmitted to New Zealand to prey on the Icerya of 

 that island. 



