66 THE CANADIAN ENTOMOLOGIST. 



ing on a willow of some ten feet high. She laid in my sight at least six on 

 different parts of the tree, and I brought away two of them, the rest I was 

 miable to reach. 



I asked Prof Rowley, at Curry ville, Mo., what was his experience in 

 this matter, he says : "I watched a female Disippiis last August laying 

 eggs on aspen. She flitted here and there, and in the course of about 

 fifteen minutes had laid a dozen eggs, and was busy when I inadvertently 

 frightened her away. Once or twice she returned to the same twig. In 

 searching for cases of this species on iNew Year's day (1889), I examined 

 but two plants of willow ; the first, scarcely four feet high, yielded twelve 

 cases ; the other, less than ten feet high, gave me forty-five. In one case, 

 two were found on one twig, not twelve inches apart, on another three. 

 I have seen five larvai on one small sprout of aspen : seven eggs on 

 another. Once found two young larvie on one leaf, both on perches, one 

 at the end, the other at the side." 



Page 273. "On hatching * * * it eats the apical leaves, and then 

 those next in order, omitting none in its passage down the stem, so that, 

 as Lintner says, its position may be ' at once revealed by the twig upon 

 which it had fed * * * being entirely defoliated from its tip about 

 eighteen inches downward, leaving only the footstalks remaining.' " The 

 fact is that the larva makes its case of the leaf it was hatched on, though, 

 for cause, it will move to another in order to make the case. As to strip- 

 ping a stem, even the mature larva does not do that to any such extent as 

 is intimated above that the young larva does. It is at all stages a light 

 feeder. 



Page 277. " It is a curious thing that we find in the caterpillars of 

 the first brood, no tendency whatever to construct hibernacula ; here we 

 have an instinct inherited by alternate generations." On page 141 6, speak- 

 ing of the same caterpillar: (it is) " the caterpillar of the latest brood 

 which constructs a hibernaculum * * *^; yet, with this common butter- 

 fly, no instance has been given where a caterpillar of an earher brood 

 showed the remotest tendency towards such action." Now, Mr. Scudder 

 may be right for New England, where Disippus is said to be two-brooded 

 only, but in West Virginia the caterpillars of the brood before the last 

 (there being three annual broods) often make hibernacula, and some of 

 the same lot will do this, while others go on to pupa and imago. If 

 this fact has never been recorded before, I put it on record now. Some 



