350 AGRICULTURAL EXPERIiAlENT STATION. 



places, no transformations would be likely to occur much before 

 late June. It is certain that most hibernating larv?e live from 

 early November to late May or early June, a period of fully six 

 months. No adults could be found and certainly none made any 

 attempt to bite. Nor could egg masses or young larvae be dis- 

 covered at this time. New leaves were developing and few 

 yet contained any water. Such of these as were examined con- 

 tained no insect life and only here and there one had trapped 

 insects ; none had begun to digest or assimilate the animal food. 



An open swamp at the head of a cranberry bog had most of 

 the leaves with pupal shells only, but though there must have 

 been hundreds of adults about, not one could be found flying, 

 nor could we stir them up. In a deep, cold, huckleberry swamp, 

 only lar\'?e were found. It was fair to conclude from the three 

 days' tramp that no summer brood oi larvae had yet begun, and 

 it seemed strongly indicated that the insects would not bite, even 

 if given the opportunity. In confirmation it may be said that 

 late in the summer Mr. Brakeley saw specimens flying, and 

 though there must have been thousands of others round about, 

 none made any effort to disturb him. 



July 3d, the leaves contained half and full-grown larvae, but 

 neither pupae nor very small larvae. July 13th, old and new 

 leaves contained very small larvae — evidently of recent date, while 

 the old leaves had also grown larvae and pupae. There was, 

 therefore, a new series of larvae and probably the first summer 

 brood. July 23d, the older leaves had very few larvae, but almost 

 as many very small as large ones. The new leaves had all stages, 

 from very small larv^as to pupae. The indications were, there- 

 fore, that the first summer brood was coming to maturity, de- 

 veloping in from fifteen to twenty days, while there were yet 

 adult individuals from the winter larva that were ovipositing. 

 From the small number of young larvae in individual leaves, the 

 indications were that eggs were laid either singly or in small 

 groups. 



The next sending did not come until August 21st, and then 

 there was everything from the most minute larva tO' pupae just 

 ready to transform. So small were some of the larvae that I 

 hunted for eggs or egg shells, but failed tO' recognize any. It is 

 probable that the youngest larvae represented a third brood, but 

 breeding was practically continuous, all stages being found at 

 any time after the middle of July. 



September ist, the same conditions existed and there was a 

 large number of larvae so small that it seemed as if at least egg 

 shells must yet remain, but none were found. Fortunately Mr. 



