IV. PRELIMINARY PREFACE. 



appendix, and I shall be pleased to have lists and notes from 

 anyone, whether the district over which they collect appears to 

 be covered or not. Mr. Gardner and myself have worked the 

 Hartlepool district for forty years, yet a list of species occurring 

 here would be very deficient if the captures of either of us were 

 omitted, and a season seldom passes in which we do not take 

 something new. 



As some collectors appear to dread extermination if too much 

 information be given as to the exact place of occurrence of an 

 insect, may I suggest that this is not necessary in a Cata- 

 logue. The district where the species occurs and the nature of 

 the habitat are all that are required. '' Sand banks near Hartle- 

 pool" or Hezleden Dene near Hartlepool" is quite enough. I 

 do not myself dread over collecting, especially in localities like 

 so many in our counties, that are not very easy of access. 



I am much in need of lists from West ^Northumberland, and 

 recent lists from the north of that county. I am also much in 

 need of assistance with the Tortrices and Tineina, which few 

 collect. I shall be glad to name or get named any species that 

 puzzle our collectors. 



I thank those who have already assisted me so willingly, and 

 trust much additional information will now flow in. 



JOHN E. ROBSON. 



Hartlepool, 



May, 1899. 



