836 EXPERIMENT STATION RECORD. 



infested fields to a depth of 6 in, in the fall and again early in the spring 

 is advised for the destruction of the pupie. 



Strawberry weevil (pp. 470-473.) — Descriptive and life-history notes 

 for Anthonomus sif/natus. Covering strawberry beds by means of 

 newspapers or screens of linen or cloth until the plants are in full bloom 

 is advised, with a view to i)rotecting the flowers until fertilization is 

 accomplished. 



Corn-root uehworm (pp. 47.5-478). — Descrii)tive and life-history notes 

 on Crambusvulvivagellns, with accounts of injuries and suggestions for 

 treatment. Fall plowing, with a top dressing of kainit in the spring 

 is advised. 



Pale-striped Jiea beetle (pp. 478-480). — Brief notes on Systena blanda 

 and damage inflicted by it. Underspraying with Paris green or Lon- 

 don inirple and lime as soon as the beetles are noticed is advised, 

 adjacent weeds being also sprayed. 



Chestnut tceevils (pp. 481-485). — Life history and remedial notes on 

 Balaninus proboscoideus and B. rectus. Planting of such varieties of 

 chestnut trees as are least attacked, and the destroying of infested nuts 

 as soon as they drop, are recommended. 



Beneficial insects (pp. 4S5-003). — This i^art of the report comprises 

 general i:)opular remarks on the benefit derived by the farmer from 

 predaceous and parasitic insects, and descriptions of many of the more 

 important species are given in greater or less detail. 



Entomology, F. L. Washburn {Oregon Sta. Bui. 33, pp. 16, figs. 2^ 

 pis. 2). 



Synopsis. — This bulletiu gives descriptive, life-history, aud remedial notes on tent 

 caterpillars, the grain plant louse, pear-leaf blister, and clover mite, with direc- 

 tions for making aud usiug Koebcle's resin wash. 



Tent caterpillars (pp. 1-5). — The larvse of 3 species of tent caterpil- 

 lars {Glisiocampa erosa, C. pluvlalis, and G. constricta) are described 

 and remedies advised. The forms were abundant in the Willamette 

 Valley during the season, the two first named species feeding upon vari- 

 ous orchard trees, while C. constricta confined its devastations to oaks, 

 particularly Quercus gar ry ana. C. pluvlalis was much less common 

 than the two other species. The life history is briefly described and 

 popular descriptions of the larvae of each species are given. Brewer's 

 blackbirds were found to eat the pupaj, but the hairy caterpillars were 

 little molested by birds. Tachina and chalcid parasites were found to 

 attack thelarvte, and some fungus diseases were also destructive, chiefly 

 to C. constricta. Spraying with the arsenites is advised, but more par- 

 ticularly it is urged that the egg masses be gathered from the twigs of 

 the fruit trees in autumn and winter and burned. An illustration on 

 the cover of the bulletin is engraved from a photograph of the larvae 

 of the 3 species. 



The grain plant louse (pp. 6-9). — Siphonophora avenwwas quite abun- 

 dant in the wheat-growing districts, attacking also oats, rye, and mes- 

 quite grass. Its history aud descrij)tion are given. Burning stubble, 



