OF THE STATE ENTOMOLOGIST. 



103 



and those who have trees badly troubled with this "white malady," 

 and can afford to risk destruction of them, should experiment in this 

 direction. My friend, M. L.'Dunlap, of Champaign, Ills., who had cer- 

 tain trees in front of his house which were once badly attacked, as- 

 sured me that he had saved and cleared them by repeated syringing 

 with cold water ; but I am much inclined to think that natural agen- 

 cies played a more important part than the cold water in producing 

 the result. 



THE HICKORY BARK-BORER— .^co/y^^^s Caryce^iley. 



(Orel. CoLEOPTERA, Fam. Scolytid^.) 



IFig. 38.] 



Last summer I received the 

 following descriptive letter : 



Dear Sir : I inclose you to- 

 day, in a newspaper, a section 

 of bark of shell-bark hickory. 

 Tree stood in a cornfield on this 

 "Chouteau Claim;" was dead- 

 ened, and large portions -of the 

 bark came off, revealing the 

 whole body of the tree covered 

 with marks engraved in the 

 hard wood — fac-similes of the 

 marks on inclosed bark — and 

 making the tree look as if flow- 

 ers were photographed all over 

 it, but flowers all of one kind. 

 I found in some of the channels 

 in the bark a black bug, which, 

 I suppose,did this regular work. 

 There was invariably, as far as 

 I could observe, a hole through 

 the bark, at the base of each 

 of the longitudinal channels 

 leading to the cross-channel. 

 We removed large sections of 



bark already quite loose, and the entire inside was covered like the 



piece I send. I propose to have the tree cut down, and to preserve 



sections of it. 



Yours, truly, 



N. W. BLISS. 



Kingston Furnace, Washington Co., July 2, 1872. 



The insect referred to by Mr. Bliss is the Hickory Bark- borer, first 

 described from the female only, under the name of Soolytus caryce^ 



