THE LEPIDOPTERA OF PERTHSHIRE. <7 



a genus, as iu Cucullia Artemisice {Abrotani), they are en- 

 tirely absent in others, as in Cucullia Umbratica and its 

 allies. The absence or presence of a well-developed mouth 

 must be a better physiological character, since the whole in- 

 ternal anatomy must depend upon it; on this point it seems 

 to me that our author does not lay quite sufficient stress, as 

 is evident by the position of the PsychidcB next to the honey- 

 loving Trochilia. The position of these three insects is cer- 

 tainly doubtful, yet Demas from its larva must clearly be 

 referred either to the neighbourhood of Orgyia or Acronycta^ 

 and Asteroscopus either to the Notodontidce, or else to the 

 neighbourhood of Xylocampa. Diloba seems to form a 

 boundary line betw^een the Pseudo-bomhyces and the sugar- 

 eating CymatophorcB, and its tongueless character seems to me 

 to give the preference to the former. This digression must be 

 excused; it is a point w^orth working out, and these few re- 

 marks may draw the attention of more competent observers 

 than myself to the subject, and amongst them I hope our 

 author will pursue his investigations on the matter. 



Anarta Melanopa, a Scottish insect of very great interest. 

 As our ordiuary Melanopa it seems to occur in Scotland, 

 Lapland and Labrador only; it is found in the Alps under 

 rather a ditTerent form, the under-wings being more uniformly 

 grey. Anarta Cordigera, also found in Rannoch, has, with 

 the exception of ^. MyrtilU, a wider range than any other 

 species in this essentially Arctic genus. There are twelve 

 European Anartce : of these Myrtilli and Cordigera are tole- 

 rably widely disseminated, Melanopa is distributed as before 

 said, and of the remainder one is peculiar to the Alps; two 

 more to the Alps in common with Lapland and Norway, but 

 the remaining six are confined to Norway and Lapland, un- 

 less shared w^ith Labrador or Greenland. Scotland owns 

 none of these species. 



