INTRODUCTION. IX 



Tees." This I have not quoted. There are no species in it of 

 special interest, and I have more recent lists from the locality 

 that include all in this work. 



A list was published anonymously in the ''Newcastle Weekly 

 Chronicle " which contained species new to me. The Editor 

 most kindly put me in communication with the author, Mr. 

 Greenwell, of Bishop Auckland. Investigation did not confirm 

 the occurrence of the supposed new species, but Mr. Greenwell 

 has supplied me with much information as to the Lepidoptera of 

 the district in which he resides. 



Another list by Mr. Fawcett, of Satley, was published in the 

 same paper. It contained several species not at all likely to 

 occur in Durham, and as Mr. Fawcett failed to give me any 

 satisfactory evidence of their occurrence, I have ignored the list 

 altogether, as much of it was quoted verbatim, but without 

 acknowledgment, from Orusby's "Durham." 



Mr. Bolam, of Berwick-upon-Tweed, published in the Tran- 

 sactions of the Berwickshire Field Club a list of the rarer Lepi- 

 doptera taken by him in that district. He kindly supplied me 

 with a copy which I have quoted largely. I regret I could not 

 prevail upon him to write me a full list of all his captures, but 

 he was always ready to assist me in the investigation of any 

 doubtful record, and to give me the benefit of his local know- 

 ledge in connection with errors in the Twizell list. 



I must uow say something of the MS. lists I have had to 

 assist me. "When it was arranged that I should prepare this 

 work, the Society sent out a circular signed by the Secretaries, 

 and asking for aid. Scarcely any response was made to this, 

 and I found it would be necessary to rely on personal applica- 

 tions to the collectors I knew in the district. Mr. Howse, too, 

 endeavoured to interest all those who came to the Museum to 

 name their captures, in the success of the Catalogue, and we 

 secured several useful lists from our joint efforts ; but they 

 were mostly from beginners, and required considerable inves- 

 tigation, many being led astray by the figures in Newman. 

 After a while I found I could almost correct these lists without 

 referring to the writer. It is needless to say I never did so, 



