122 Lord Walsingliam on 



a widely- extended range of distribution to north and 

 south. 



The great dividing range of the Eocky Mountains 

 exercises, as might have been expected, a very important 

 influence upon the Micro-Lepidoptera of North America, 

 forming a barrier over which these delicate insects are 

 apparently unable to pass. The proportion of eastern 

 species found on the western side of this barrier is 

 remarkably small, although the same genera are for the 

 most part represented more or less abundantly in both 

 parts of the continent. 



It has been a matter of regret to me that the single 

 plate which accompanies this paper was prepared 

 before a number of the more interesting species reached 

 me. I am unwilling to delay the publication of 

 the paper until the return of the artist, who is now 

 abroad ; but I trust that at some future time I may be 

 able to include, in another publication, good figures of 

 the greater portion of the species herein described, 

 several of which, represented as they are by one or two 

 specimens only, I am unable at present to distribute 

 among my many obliging correspondents in America. 



Padisca giganteana, Eiley, and (Enectra irrorea, Eob., 

 were not recognised as described species until after they 

 had been included in the plate ; but figures of both these 

 species will, I hope, be found useful. 



TORTRICID.E. 



TOBTEICIN^. 



Cac(ECIA, Hilb. 



Cacoecia rosaceana, Harris. 



One male. Wisconsin. 



Cacoecia inirpurana, Clem. 

 One male. Wisconsin. 



Cacoecia cerasivorana, Fitch. 

 One pair. Wisconsin. 



Cacoecia jyarallcla, Eobs. 

 Three males, one female. Wisconsin. 



