CRANBERRIES — INSECT PESTS. 165 



oolor ; while in another specimen which had just suspended 

 itself into a pupa, the head was decidedly dark, honey yellow 

 ■or amber 3^ello\v. Still entertaining the possibility, as before 

 stated, that there ^nay be, fonr, five, or even six species, and 

 it is not at all unlikely for this to be the case, we have plainly 

 the other argument, that of a number of persons describing 

 the different stages of the same insect, which brings us at 

 once to the conclusion that the several descriptions in our 

 reports and our entomological authorities may resolve them- 

 selves into one, two, or at most the three species mentioned 

 by Prof. Packard in his " Injurious Insects, New and Little- 

 known." Until the moths appear, I cannot tell further what 

 may be the results of the development of those species which 

 have been sent to me by Dr. Briggs. 



From the observations I have made already upon this cat- 

 erpillar, I feel confident and tolerably certain that all the 

 caterpillars mentioned in reports one, three, eleven, twelve 

 and fourteen are simply different stages of the same species. 

 Is it, then, one of the three species mentioned by Prof. 

 Packard in the seventeenth report? If so, which one? Let 

 us endeavor to ascertain as far as our facts will permit. 



The following cori'espondence aids us and speaks for itself. 

 It presents so many valuable hints and suggestions, and con- 

 tains so much really useful information that I present it en- 

 tire. I obtained most of these letters through Dr. Briofgs, 

 and am therefore especially indebted to him for them. 



The first is a letter from Mr. L. H. Small, dated — 



Harwich, Sept. 14, 1868. 



Dr. C. Briggs. Dear Sir : — Your ver}- welcome favor of the 

 11th is at hand. You speak of the very discouraging prospects for 

 a crop in and about 3'our vicinity. Our crop on the Cape is very light, 

 and in Harwich almost an entire failure. Having been troubled with 

 the j^re loorm we kept the water on later than usual, but the season 

 being ver}' backward we have failed to kill the borers. We kept the 

 water over the vines in many places where no worms had been so 

 late that the blossoms did not set with fruit in time to mature. 



In regard to the vine worm I would saj^, that we usually have three 

 crops of them when the vines are not flooded. The first worms make 

 their appearance about the middle of Ma}^ ; the second, about the 10th 

 of June ; the third, tbe last of August or first of September ; but they 



