Vi PREFACE. 



structing and ample materials upon which to try, if they do not 

 exhaust their patience and perseverance. It is not, from these 

 remarks, to be inferred that I have eluded this part of the sub- 

 ject; far from it, I have given it a fair share of my attention : 

 but I candidly confess I saw no useful result to be derived from 

 going over the same labour again which has been so ably and 

 satisfactorily done both by the late J. F. Stephens and Mr. H. 

 Doubleday; and as theNomenclature is now put into a satisfactory 

 condition by the efforts of those two gentlemen, I am, for one, 

 quite willing to let it rest where they have left it ; for I question 

 the utility of bringing forward the "Babel perplexity" into 

 every succeeding work on the subject. This, however, leads me 

 to remark, that the " great alterations " alluded to above, have 

 necessarily driven me to find generic appellations for those 

 insects which have been separated from their hitherto reputed 

 congeners; and in every instance, except in Calosetia y in the 

 family Lozoperidse, I have revived previously-used, but obsolete 

 names, in preference to making new ones. 



I have already mentioned the names of Doubleday and Ste- 

 phens, and the most important works which have been published 

 during the last ten years are from their pens. I will, therefore, 

 contrast them with my own. The first, the ' Synonymic List of 

 British Lepidoptera/ by Mr. H. Doubleday, was published in 

 1849 (the second edition has just appeared). The second is the 

 Museum Catalogue ' Part X. Lepidoptera continued/ by J. F. 

 Stephens, published in 1852 ; and this latter I have taken as 



my text-book. 



Species. 



In the Museum Catalogue there are mentioned 310 

 Additions in the present volume 16 



Making .... 326 

 Deduct species or varieties enumerated as such, 

 in the Museum Catalogue, but not included 

 in this work 28 



Leaves the number described, inclusive of Lozo- 

 ttmia piceana (see p. 9) 298 



