INTKODTJCTION. XV 



Poh/ommatus agestis. When we come to the smaller species 

 we will find a few that as yet have not been taken beyond our 

 boundaries. 



It only remains to thank those who have so kindly assisted 

 me, and, in addition to the local friends already named, I would 

 especially mention Mr. C. Gr. Barrett for much information and 

 timely aid, and Mr. E. R. Bankes for his advice on several 

 occasions, and other help in the investigation of doubtful ques- 

 tions. I would also thank Dr. Ellis, of Liverpool, and Mr. 

 Porritt, of Huddersfield, for additional information respecting 

 the occurrence of species in their catalogues of the Lepidoptera 

 of Lancashire and Cheshire, and of Yorkshire. I would especially 

 thank Mr. Thwaytes, of Carlisle, for the use of a carefully pre- 

 pared MS. list of the Lepidoptera that have occurred in Cumber- 

 land — a list that I hope will be published by some Cumberland 

 society. Gratitude is said to be "a lively sense of favours to 

 come." I hope to have much more aid in the next volume ! 

 I would urgently request collectors to favour me with lists of 

 the Pyrales, Crambites, Tortrices, Tineina, and Pterophori they 

 take, which will be included in it. Anyone who does not 

 care to collect these groups will equally oblige by pinning all 

 such species and sending them to me, set or unset, with the 

 localities where they were taken. 



May I say in conclusion, that if I have excluded species 

 which, in the opinion of those who have recorded them, have 

 • really occurred within our limits, I have done so without any 

 idea of setting up my own judgment as superior to theirs. 

 What I have excluded has been done because the evidence 

 supplied failed to satisfy me, and should more satisfactory 

 evidence be forthcoming hereafter, I will be only too glad to 

 confess my error. I have striven to make the list a reliable one. 

 I may point to my remarks on such species as Epichjiopteryx 

 calvella (p. 76) and Gastropacha ilicifoUa (p. 304) as evidence 

 of the trouble I have taken to thoroughly work out the facts 

 relating to supposed occurrences, and I have never striven to 

 increase the number of recorded species by the inclusion of 

 doubtful insects. 



