•92 THE CANADIAN ENTOMOLOGIST. 



The Island specimens are smaller, and the dark portions of their 

 bodies blacker than those of the west and south. Although undoubtedly 

 ./uruus, thQy exhibits sufficient change of color to claim attention. Possibly 

 the larval food is the pDwer whereby this variety is produced. I have not 

 had an opportunity of comparing specimens of tiirnus from widely 

 separated localities, but it is a fact that those occurring in the latitude of 

 Anticosti are different from the turnus of the south and more temperate 

 latitudes of America. 



The dark color observable in the Anticosti turnus supports my view 

 that boreal insects, especially the Diurnals of high latitudes, are blacker 

 where the dark scales occur than their congeners of the south. The fact 

 that Papilla glaucus var. turnus * feeds on the Hickory, while turnus has 

 not been found feeding on the leaves of this tree, is, in part, evidence 

 that although the variety is thus attracted by change of appetite to an 

 unusual plant, the true form (turnus) holds to those food plants which 

 .have been recorded by the early writers on Entomology. 



I took a few specimens of Collas on Anticosti last July, which Mr. 

 Strecker informs me are phllodlce. t This is another rare butterfly on the 

 Island, where its habits differ from those found at Quebec. The Anticosti 

 phllodlce is a difficult insect to capture ; its flight is rapid and continuous 

 during the occasional hours of its appearance, and it is only towards the 

 end of July, when the weather becomes cold, that it can be easily 

 approached. % When it alights on a flower, instead of being erect on its 

 feet, it lies sideways, as if to receive the warmth of the sun. Here, then, 

 we have the most northern habitat of Collas phllodlce almost on the 

 dividing line between the Canadian and Arctic Insect Fauna. 



•^ Note. — See Can. Ext., vol, v, p. 9. 



t Note. — To my subscribers I distributed an equal share of what I supposed 

 were two fcpecies of Co^ia.s% taken last year on Anticosti, and one of each was sent 

 to Mr. Grote, who did not include theui in his article on the butterflies of that 

 island. 



X Note. — Its habits are similar to CoVicih ednsa of Europe, which has a lively 

 flight. Mr. Coleman says that " his jjursuer has need of the seven league boots, 

 *' with the hand of Mercury, to insure success in the fair open race, if that can be 

 *' called a race at all, between a heavy biped struggling and perspiring about a 

 ■*' slippery hill-side, snch as cduHa loves, and a ranged spirit of air, to whom up-hill 

 ** and down-hill seems all one." 



