184 THE CAN\\DIAX ENTOMOLOGIST. 



friends who reside in various parts of the Union, that while little, if any,, 

 diminution in the numbers of the pest is to be observed in the west, it is~ 

 becoming very destructive where it has attained to its second year of 

 colonization. During the first year of its invasion of a particular locality, 

 no appreciable damage is done by it, but as its armies increase in geome- 

 trical progression, the potato crops of the following season generally 

 suffer to a terrible extent. It has now covered the whole of the Province 

 of Ontario, and is very destructive throughout the western half of it,, 

 though we are happy to say that our intelligent farmers and gardeners are 

 eftectually using the remedies suggested by our colleagues, Messrs 

 Saunders and Reed, in their Report to the Legislature a few years ago. 

 In Quebec it is but beginning to be observed ; no doubt it will be found 

 there in myriads next year. Across the border, it has penetrated to the 

 western portion of Vermont, into New Jersey, down to the sea coast in 

 Pennsylvania, and in Maryland ; at Baltimore, Md., it is very abundant,, 

 while straggling outposts have been found as far south as Washington. 

 The whole of New York and Ohio have been pretty well covered with 

 the insect, while in Missouri it is as abundant as ever. In Indiana and 

 Michigan there is a local diminution in the numbers of the pest, but no 

 where are there as yet any signs of its cessation. The people of Europe 

 are now beginning — and with good reason — to feel alarmed at the 

 prospect of its crossing the Atlantic. The English and French scientific 

 and agricultural publications are commencing to publish notices of the 

 insect and to talk of restrictive measures, Avhile in Germany, we are told 

 that stringent regulations will probably soon be put in force by the Gov- 

 ernment to prevent the invasion of the country. Unless some regulations 

 of this kind are put in general force throughout the whole of Western 

 Europe, I believe that — ^judging from the spread of noxious Euroj^ean 

 insects on this side of the Atlantic — the Colorado Beetle will soon 

 become there as familiar an object and as destructive a pest as it is here. 



AVhile the Colorado Beetle from the Rocky Mountains has been over- 

 spreading the whole northern continent eastward, there has been moving 

 southward and westward in a similar manner another insect — the Cabbage 

 Butterfly {Pieris j-apce) — that is almost as injurious p,s the other. This- 

 insect, an pAu-opean importation, as of course you all know, starting from 

 Quebec some few years ago — there first noticed by our friends, Messrs. 

 Couper and I'owles— has now spread westward over almost the whole of 

 Ontario. At Port Hope it has been this year by far the most common 

 of all butterflies ; thousands were to be seen throughout the whole 



