354 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 1 



have been able to glean from Nature (as illustrated in the figures on 

 the plate), I am not vet convinced that it is wise to assert that a fruit- 

 grower must drench his trees with arsenate of lead only and that the 

 spray must be applied with a force necessary to drive it into the lower 

 calyx cavity of young apples. The evidence submitted in Bulletin 

 131 of the Colorado Experiment Station to show that fruit trees are 

 being poisoned and killed by excessive use of poison sprays should be 

 seriously considered by both entomologists and fruit-growers in alka- 

 line regions. Under similar conditions cannot just as satisfactory re- 

 sults be obtained against the codling-moth with either Paris Green or 

 arsenate of lead applied as a fine spray in moderate quantities evenly 

 over the trees, at about 100 pounds pressure, if the spray is properly 

 directed downward into the open outer calyx cavities of the recently- 

 set apples? I have not yet seen sufficient evidence to warrant ento- 

 mologists in answiering this question in the negative. 



THE ARMY WORM AT DURHAM, NORTH CAROLINA 



By Z. P. Metcalf, Assistant Entomologist, State Department of Agric-ulture, 



Raleigh, N. C. 



The occurrence of the Army Worm {Eeliopliila unipuncta) in de- 

 structive numbers at Durham, in the east central part of this state, 

 on August 9, 1908, presented three interesting points : 



(1) The occurrence of this species so far south and so far east in 

 the state; (2) its occurrence so late in the season; and (3) the per 

 cent of worms parasitized. 



Our office records covering the last eight years show that this in- 

 sect does not occur in destructive numbers very far east of the moun- 

 tains. It was reported as being injurious in INIay, 1907, from the ex- 

 treme southwestern portion of the state. 



Although the Army Worm has been reported as being destructive 

 as late as the last of September, it rarely occurs in injurious numbers 

 after the last of July. 



As is usual during such oiitbreaks, large numbers of Tachina flies 

 {WintJiemia quadripustidata) were to be found in the fields laying 

 eggs on the worms. With the intention of making a more careful 

 study of these parasites 491 larvae were brought back and placed in 

 cages. The following data gleaned from the records of these cages 

 are presented as being of some interest. Of the 491 larvae, 442 were 

 infested with the eggs of the dipterous parasite, Winthemia quadripus- 



