PREFACE. 



The present volume concludes the Geometras. A 

 plate has been added containing a number of figures 

 which were not given in their proper places in pre- 

 ceding volumes, but which it has since been thought 

 advisable to reproduce. The same may be said of the 

 description of the larva of Sterrha sacraria which 

 appears at the end. 



I have again to thank Mr. G. C. Bignell for the list 

 of parasites relating to the species treated of in the 

 volume; and Mr. W. Denison Roebuck for his assist- 

 ance in copying out the descriptions, etc. 



GEO. T. PORRITT. 



Crosland Hall, 



huddersfield; 



January 13th, 1899. 



