New York Agricultural Experiment Station. 357 



this arsenical' showed no injury to the leaves it is possible that 

 the compound was not properly prepared. Further experiments 

 with this compound are needed. No more larvee appeared on the 

 sprayed bushes so that a second application was unnecessary. 



Plat III, which was unsprayed, was nearly stripped of its leaves 

 before the season was over, so that but little first-class fruit was 

 developed. Plate XXIX is from a photograph taken in the field. 

 The bushes on the left were sprayed with hellebore, those on the 

 right were unsprayed. 



Dry application of hellebore. — Powdered hellebore may be ap- 

 plied pure or mixed with twice its weight of cheap flour or land 

 plaster. It should be dusted on early in the morning or in the 

 evening while the leaves are moist with dew. The principal ob- 

 jection to this method is the difficulty of applying to the under 

 surface and in making it adhere to the leaves. 



recommendations. 



The treatment for this insect and insects of this class is usually 

 a very simple matter. As indicated by the above experiments 

 the prompt application of hellebore will check them, and in the 

 case of this species, brushing the larvae off from the bushes can 

 be made effective. Where a spraying machine can be had it will 

 be found that a more thorough application can be made with the 

 spray. Make the applications thorough, drenching both upper 

 and under surfaces of the leaf. 



BIBLIOGKAPHICAL LIST. 



1846. Harris, T. W. Entomological Correspondence. Saunders states 

 (Ann. Rept. Ont. Ent. Soc, 1873, p. 11), that a letter written by Darling 

 to Harris in 1846, as published therein, gives a " very correct account of 

 the manner in which the egg is deposited." 



1867. Norton, Edward. Trans. Am. Ent Soc, I, pp. 249-250. Tech- 

 nical description of larva and female, with brief notes on life history. 



1869. Walsh, B. D., and Riley, C. V. Amer. Ent, July, I, 1, p. 224. 

 Description of larva and account of ravages. 



1870. Riley, C. V. Amer. Ent., August, I, 2, p. 276. Description of 

 larva. Notes on remedies. 



