540 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 4 



48. (H) Green-bug (Toxoptera graminum) . An investigation of field spraying for 

 incipient outbreaks; supplemental to project number 100. 



T. J. Headlee and F. B. Milliken, Kas. Agr. Exp. Sta., Manhattan, Kas. 



49. (A) Woolly aphis. A general study with special reference to its relation to 

 other forms of the same species native in Arkansas and to the immunity of Northern 

 Spy trees. 



Paul Hayhurst, Ark. Agr. Exp. Sta., Fayetteville, Ark. 



50. (S) Woolly aphis. 



L. M. Smith, field laboratory of 111. State Entomologist, Carbondale, 111. 



51. Woolly aphis; experience in methods of control on nursery stock. 

 H. B. Hungerford, Univ. of Kas., Lawrence, Kas. 



52. (S) Woolly aphis. 



E. L. Worsham, State Entomologist, Atlanta, Ga. 



53. Woolly aphis; experiments with different solutions for control. 



T. B. Symons and O. G. Babcock, Md. Agr. Exp. Sta., College Park, Md. 



54. (S) Woolly aphis; spraying nursery stock. (Cooperation State Nursery 

 Inspector.) 



H. A. Gossard, Ohio Agr. Exp. Sta., Wooster, Ohio. 



55. (A) Citrus white-fly; a study of its biology and measures of control. Study is 

 now being given to determine the causes of natural mortality. 



J. R. Watson, Fla. Agr. Exp. Sta., Gainesville, Fla. 



56. (H) Scale insects of Texas. 



Wilmon Newell and assistants, Tex. Agr. Exp. Sta., College Station, Tex. 



57. (S) Fruit scales; life history studies and means of control. 



C. Gordon Hewitt, Div. Entomology, Can. Dept. Agr., Ottawa, Can. 



58. San Jose scale; methods of control. 



A. J. Spangler, University of Kansas, Lawrence, Kas. 



59. (S) San Jose scale; methods of control with lime sulphur wash, miscible oils and 

 other sprays. 



T. B. Symons, E. N. Corey, O. G. Babcock, Md. State Hort. Dept., College 

 Park, Md. 



60. (S) Terrapin scale; same as project 59. 



Hymenoptera 



61. (S) Larch sawfly {Lygceonematus erichsonii) and its parasites. European and 

 North American parasites are being studied and an attempt is being made to introduce 

 the latter from New England. 



C. Gordon Hewitt, Div. Entomology, Dept. Agr., Ottawa, Can. 



62. Larch sawfly. 



A. G. Ruggles, Minn. Agr. Exp. Sta., St. Anthony Park, Minn. 



63. (S) Cherry sawfly leaf-miner {Profemisa collaris Mac G.); life history, habits, 

 and methods of control of this new cherry pest. 



P. J. Parrott, N. Y. Agr. Exp. Sta., Geneva, N. Y. 



64. Bnichophagus funebris. 



Warren Williamson, Minn. Agr. Exp. Sta., St. Anthony Park, Minn. 



65. Gall-forming insects of Kansas with special reference to Cynipidce. 

 Roy Fraser, University of Kansas, Lawrence, Kansas. 



66. (S) Wheat joint-worm; field observations on measures of control. 

 H. A. Gossard and assistants, Oliio Agr. Exp. Sta., Wooster, Ohio. 



68. (A) OpiincB. A monographic revision of this family of Braconidce with special 

 reference to its economic importance. 



A. B. Gahan, Md. Agr. Exp. Sta., College Park, Md. 



