31 



the same species, with the report that it was very destructive to the 

 pea crop in that section. May 23 we again received specimens from 

 Mr. Bridges, with the accompanying statement that the species had 

 destroyed the pea crop of that vicinity for shipping purposes, and was 

 then destroying the Canada field peas sowed for hay. The same day 

 a communication was received from Professor Johnson in regard to this 

 insect, which, as this has already been treated in detail in Bulletin No. 

 20, need not be repeated here. A few d&js later, Mr. E. D. Sanderson 

 called the writer's attention to this plant-louse and its injuries at Col- 

 lege Park, Md., when upon examination of our experimental plats of 

 peas growing on the Department grounds the writer found the same 

 species at work there. 



June 2, Prof. G. Harold Powell, Newark, Del., sent specimens, with 

 report that this plant-louse w T as very abundant on the pea crop 

 throughout the State. 



July 3 we received specimens from Mr. D. W. Watrous, East 

 Hampton. Conn., with' the statement that ''Champion of England" 

 peas were being injured by this insect, the plants being covered with 

 their numbers. 



July 7 we received, through Dr. E. P. Felt, Albany, N. Y., speci- 

 mens from C. J.Allen, Floral Park, Long Island, with the report 

 that one farmer in that vicinit} T had lost 11 acres and another 20 acres 

 of peas through the ravages of this pest. 



July 28, the late Prof. F. L. Harvey, Orono, Me., transmitted 

 specimens, with the accompanying information that this pea louse had 

 been doing a great deal of damage to peas in Maine, several com- 

 plaints having reached the experiment station. The insect was also 

 abundant in gardens about Orono. 



August 9, Dr. James Fletcher, Ottawa, Canada, sent specimens 

 received from New Minas, Nappan, and Truro, Nova Scotia, and from 

 Freeman, Ontario. Dr. Fletcher's correspondent from the last local- 

 ity wrote, "this is only a fair sample from a 11-acre field; it looks as 

 though the whole crop would be lost." August 22, Dr. Fletcher 

 wrote that this plant-louse attacked not only field peas but tares, and 

 that on the experimental farm at Ottawa it had ruined two long 

 hedges of sweet peas. 



August 12 we received specimens from Mr. A. Brakeley, Borden- 

 town, N. J., with the report that his first crop of peas had suffered 

 considerable injury, perhaps one-third being lost; the second crop 

 about two-thirds, while the third crop of 31 acres yielded only a few 

 hundred cans. 



From October 30 to November 1 we received specimens in different 

 lots from Mr. Samuel R. Haynes, Portsmouth, Va., from which locality 

 we have previously reported it as very destructive. 



Writing December 20, 1899, Mr. C. H. Pearson, of Baltimore, pro- 



