INSECTS AFFECTING PARK AND WOODLAND TREES 279 



valuable trees should have all their infested branches cut away and burned. 

 It might pay in the case of highly prized individuals on lawns to spray 

 them about the middle of May with arsenate of lead, using one of the 

 prepared paste forms at the rate of 6 to 8 pounds to 50 gallons of water 

 and taking special pains to cover the twigs and base of the leaf stalks with 

 the insecticide. The object of this is to kill the beetles as they begin to 

 gnaw their wa)' into the twigs and leaf stalks. .Similar treatment of the 

 limbs and trunk might aid to a considerable extent in preventing the 

 entrance of the beetles tliough it would require very thorough work, as the 

 insects usualh' enter the tree from under some projecting scale of bark, a 

 place where it would l)e ver)- difficult to put the poison. Our princijial 

 dependence must be in the destruction of the infested trees. 



Bibliography 

 18O9 LeConte, J. L. S\nopsis ot" tlie Scolytidae of America north of Mt-.xico. Am. 



Ent. Soc . trails. 2: 165 

 1890 Packard, A, S. V . s. Km. Com. 5tli Re])'t, ]i. 294-95 



1895 Smith, J. B. X. j. Agric. Exp. Sta. Rei/t, \>. 465-7;, 



1896 Johnson, C. W. Dep't Agric. Pa. Rep't, \). 360-61 



1S96 Osborn, Herbert. la. Agric. Exp. Sta. Bui. ,33, p. 594-95 

 1902 Felt, E. P. Country Gentleman. .•\[). 3, 67: 291 



Banded ash borer 



A\-Of/y/!ts capraca .Sa)- 



Logs of lilack ash and dying trees are frequently seriously injured by borers belong- 

 ing to this sjiecies. 



This insect has been known for years, and Dr Riley has placed on 

 record an instance of serious injury presumably by this species. Mr Shelb\- 

 Reed of Scottsville N. Y., in 1880 referred briefly in the American /{ii/o- 

 mologist, to a widespread destruction of black ash forests in his vicinity by 

 an in.sect which was probably this s])ecies. The beetle may be recognized 

 by the following description : 



Dark brownish purple, head and thorax darkest ; eyes nearly circular, 

 behind them a narrow vellow bortler ; thorax barrel-shai)ed, deep purple, 



