﻿34 NINTIJ ANNUAL REPOKT 



dates more particularly on the Fir, and, as a worm, is at once distin- 

 guished by being green, with darker green lines, but no spots, and by 

 making a grayer cocoon. The larvfe of Lophyrus Americanus Leach, 

 Z. Fahricii Leach, and of Z. compar Leach are unknown, and I sus- 

 pect that some of these supposed species will prove to be but varie- 

 ties of the three whose habits are here recorded. 



THE COLORADO POTATO-BEETLE. 



In some parts of Iowa, Wisconsin and the Northwest, this insect 

 was very troublesome again the past year, but from one cause and 

 another, though principally on account of the wet character of the 

 past two summers, it attracted little attention in Missouri and the 

 larger part of the Mississippi Valley. Yet on the Atlantic, and 

 especially in the New England States, it has been a most fruitful 

 theme of discussion and a constant object of warfare: nor have its 

 doings ceased to interest Europeans. A pretty full record of its move- 

 ments and of the more important and practical topics connected with 

 it, has been published by me from year to year, and quite a demand 

 has been made for back copies of these Reports from people in the 

 East, and even from Europe. The editions, of the earlier Reports, 

 which contained most information on the subject have long since been 

 exhausted, and in order to satisfy the demand, I prepared last Fall a 

 small work entitled "Potato Pests," in which, with other insect foes 

 of the Potato, the Colorado Potato-beetle is treated of at length. 

 The work is published by the Orange Judd Co., of New York, and 

 what I have to say below is mostly taken from it, and will serve to 

 complete and complement what has previously been published in 

 these pages. 



SlTtEAP OK THK INSECT DURING THE YE.VK. 



During the past year, 1876, the insect has swarmed in most of 

 the New England States, and especially on the sea shore. It has 

 extended north around Montreal, and was especially abundant as far 

 as Trois Rivieres;* while in its eastern progress it has overrun Con- 



L. VvoyAWCliiiV in NaturaUalc Canadicn, Aug. ]S7G,i). 249. 



