384 Report of the Department of Entomology of the 



and should be practised between August i and 15. All weeds on 

 and near the bog should be cut. A cloudy period should be selected, 

 and a good wind favors efficient control. Bugs on the surface of 

 the water should be sprayed with kerosene. All grass, weeds, and 

 drift on the shore should be burned with a burning torch-spray. 



Spraying is the only possible remedy on " dry bogs." When the 

 vines contain much old wood they should be mowed at the usual 

 season for cutting and, between August 1 and 15, sprayed with soap 

 solution, 1 pound to 7 gallons, making two applications, using 200 

 gallons per acre. 



INTRODUCTORY NOTES. 



Prior to and during the summer of 1911 a cranberry bog at Cal- 

 verton, L. I., managed by Mr. R. C. Brown, of Riverhead, suffered 

 from a peculiar dying of the new growth of the cranberry vines. 

 This trouble was at first ascribed to " cranberry scald " and " cran- 

 berry rot," but the treatment recommended for the control of these 

 diseases — mowing the vines, resanding, fertilizing with fish scrap 

 and the use of other measures to promote new growth of the vines — 

 did not afford any protection to the plants. Mr. Brown reported 

 the damage as great in 1912, after using the above measures, as 

 in the previous year. 



The writers had no part in the above diagnosis of the trouble, 

 nor in the recommendations given for treatment; but they assisted 

 Mr. Brown in planning his stationary spraying outfit for pre- 

 venting the supposed fungus troubles. Upon assembling the equip- 

 ment they requested Mr. Brown to notify them the following year 

 as soon as any of the injury was noticeable on the bogs. Early in 

 July Mr. Brown reported that a diseased condition of the vines 

 was again making its appearance. The vines were inspected July 

 10, 1912, and, after a careful search by the senior author, patches 

 of a white, powdery substance were found on branches and on the 

 ground. By using caution in moving the branches, and with the 

 aid of a hand lens a small nymph of some hemipterous insect was 

 found, which proved a very active jumper. The life history of 

 this insect was followed in the field and in breeding cages until 

 adults were obtained. These were kindly identified by Mr. E. P. 

 Van Duzee as Phylloscelis atra Germ., which belongs to a group of 

 homopterons known as the Fulgoridse or Lantern-fly Family. The 



