NOMENCLATURE OF LEPIDOPTERA. 275 



PREFACE. 



When Sir George Hampson first consulted Lord Walsingham 

 upon a scheme for exchanging ideas with some leading Lepi- 

 dopterists in regard to questions of nomenclature with a view to 

 secure as much uniformity as possible, it was scarcely contemplated 

 that this correspondence would attain to the proportions it has now 

 reached, but the importance of the views expressed and of the 

 reasons given in support of them, together with some information 

 hitherto unpublished, is thought to justify the proposal to print 

 these papers in preparation for the meeting of the Zoological Con- 

 gress at Cambridge. 



After the papers had circulated for the first time, at Lord 

 Walsingham's request I made a careful analysis of the replies given 

 — this accompanied his Lordship's second reply. My analysis 

 seems generally to have been accepted as an impartial one, and Sir 

 George Hampson requested me to incorporate in it the second 

 series of replies and edit the whole for publication. 



This I have endeavoured to do in a spirit of absolute imparti- 

 ality, only adding notes where it has seemed absolutely necessary 

 to do so ; the replies have been arranged in chronological order 

 under the questions to which they are answers. 



In conclusion, I should remark that intimately connected with 

 this correspondence are two papers published under the joint 

 authorship of Lord Walsingham and myself 



1. Rules for regulating nomenclature with a view to secure 

 a strict application of the Law of Priority in Entomological work. 

 London (Longmans), 2 Nov., 1896. 



2. An attempt to elucidate and to fix the types of Tortrix, 

 Tinea and Ahicita, three of the Linnaean subdivisions of PJialaena, 

 L. Entomologists' Monthly Magazine, xxxiii. 37 — 42. London, 

 I Feb., 1897. 



JNO. HARTLEY DURRANT. 



Merton Hall, Thetford. 

 I July, 1S98. 



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