PREFACE. 



The object of this pamphlet is to make known 

 several new species of Pterophoridse occurring in 

 California and Oregon, some of which may probably 

 have also a wider distribution. The types are at 

 present in my own collection, where they will always 

 be at the service of any entomologists who may be 

 engaged in the study of this group of insects on this 

 side of the Atlantic ; and I have given duplicates of 

 nearly all the species here described to a friend in 

 America, by whose known courtesy I feel sure that 

 they will there be made available, in the interests of 

 science, to all who may wish to see them. 



WALSINGHAM. 



