156 JOURNAL OP ECONOMIC ENTOMOLOGY [Vol. 1 



and subsequently, the results of which are given in Bulletin No. 50 

 and several Farmers ' Bulletins. He considered it a most difficult pest 

 to control on corn and did not know of any practicable method, other 

 than fall and winter plowing, to destroy the pupfe in the soil. This 

 practice is most effective when followed by all of the farmers in a 

 neighborhood. 



Mr. Bruner said that the silo corn crop in Nebraska is often greatly 

 injured by this insect. 



Mr. Osborn stated that in Ohio the insect has caused more injury 

 this year than usual, but that it had probably been increasing in 

 abundance during the past few years. 



Mr. Sanderson expressed the opinion that in the northern part of 

 the country, the prevalence of this insect is governed by the tempera- 

 ture of the preceding winter. 



Mr. Fletcher remarked that soy beans are an excellent trap crop 

 to plant on account of their value as a fertilizer, and Mr. Bruner 

 stated that the red-winged blackbird destroys many of these worms, 



Mr. Morgan stated that the elm leaf beetle had been found for the 

 first time in Tennessee, during the summer of 1907, at Ryersville, in 

 the northeastern part of the state. 



Mr. Sanderson asked the best remedy for the walnut Datana, as it 

 is very bad in New Hampshire, to which Mr. J. B. Smith replied that 

 it is common in New Jersey and is easily controlled by crushing the 

 larvEe on the trunks of the trees. He had found that only a small per 

 cent of the larvae pupate and pass the winter. Both arsenate of lead 

 and paris green had been tried as a means of destroying the larvag. 



Mr. Hooker mentioned the fact that in Massachusetts this insect 

 often does considerable injury to the black walnut, though parasitized, 

 at times, by Tachinid flies. 



Mr. Morgan stated that in the south this insect is heavily parasitized 

 during some seasons. During the summer of 1907 Datana larvae 

 caused considerable injury in Tennessee and Louisiana by attacking 

 pecan trees. 



Mr. Fletcher spoke of the milky juice of the Norway maple and 

 suggested that this might, in a measure, prevent insect attack. He 

 had found Lecanium nigrofasciatum very abundant in two localities, 

 and it had proved very hard to control. In reply to the latter remark, 

 Mr, Symons stated that he had used the lime and sulphur wash against 

 this insect in Maryland and had secured good results. 



Mr. J. L. Phillips stated that the maple scale, Chrysomphalus tene- 

 bricosus, was first observed by him in Virginia in injurious numbers 

 on soft maples at Charlottesville, Va-, in 1899. In many cases it had 



