A LIST 



OF THE LEPIDOPTERA KNOWN TO OCCUR 



IN YORKSHIRE. 



By G. T. PORRITT, F.L.S., 



President, Etttoiiiological Section, Yorkshire Naturalists'' Union. 



For four years, except when the state of my health has pre- 

 vented it, I have been carefully collecting all the information I 

 could respecting the lepidopterous fauna of our large county. 

 And as a good portion of the county has been fairly well worked 

 for many years, the result is a highly satisfactory list. I have to 

 thank most sincerely kind friends all over the county for sending 

 me the results of their investigations ; and I have also culled 

 largely from nearly all the available entomological literature. 

 Specially must I acknowledge my great indebtedness to Mr. W. 

 Denison Roebuck, the energetic secretary of our union, who for 

 many years has assiduously collected together as published, 

 nearly all the information relating to the entire fauna of York- 

 shire. His collected records of the lepidoptera would of them- 

 selves have made a fair county catalogue, and he unreservedly 

 placed them all in my hands for incorporation in the present list. 



Many species and localities given in some of the older works, 

 and indeed in some of the more recent records, I have been 

 compelled to omit, the evidence in such cases not appearing to 

 me to be sufficiently conclusive to warrant them a place. 



In most cases I have thought it advisable to give an authority 

 for the species, though in a great many instances the species and 

 localities are also vouched for by several other lepidopterists 



