THE FRUIT-TREE BARK-BEETLE. 97 



with the result that all the beetles were killed. At the time of writing 

 the tree was doing well. Writing again October 25, Mr. Beals stated 

 that although the kerosene killed all the insects with which it came in 

 contact, the experiment was not an entire success for the reason that 

 the smaller branches and twigs were not treated. 



As still further corroboration of the statements previously made, that 

 this species will attack healthy trees, the writer observed during the 

 season of 1898 in the same orchard mentioned in the footnote on page 

 3 of the circular, a perfectly healthy apple tree, which had been attacked 

 evidently several years previously, judging from the nearly obsolete 

 scars on the trunk. Specimens of the beetle, dead in two or three of the 

 burrows, showed beyond doubt that this was the species concerned, 

 were it possible to mistake its work for that of any other known Scolytid. 

 The apple tree had entirely recovered fror: attack. 



The peach tree mentioned in the same footnote as apparently perfectly 

 sound except for the attack of the beetles was again attacked last fall, 

 and will be kept under observation, as it is probable that it will not be 

 able to survive more than one or two years under the circumstances. 

 The particular place selected by the beetles for their principal attack 

 in 1897 showed the presence of "sun scald" early in the succeeding 

 summer. Later this space, which was on the main part of the trunk, 

 was found to be badly infested with the peach borer (Sannina exitiosa). 

 Some of the smaller branches had attracted another well-known borer 

 of the peach, Phloeotribus liminaris Harr., and the tree now shows the 

 effect of attack, although no beetles have yet bred from any except one 

 dead branch. 



The presence of this bark-beetle in trees infested by the San Jose 

 scale, as mentioned on page 2 of the circular, was again noticed the 

 present year, but Messrs. W. G. Johnson and F. M. Webster have both 

 informed me that this is unusual. 



Chiropachys colon Linn., the most abundant and destructive parasitic 

 enemy of this bark- beetle, was noticed abroad the past year as early as 

 April 9. 



THE BANDED HICKORY BORER. 



(Chion cinctus Dru.) 



A Oerambycid larva, unknown to the writer, was observed at Colonial 

 Beach, Ya., in 1897, at work in branches of plum infested also by 

 Scolytus rugulosus. It was reared, and proved to be Chion cinctus. This 

 is, I believe, the first instance of this species being found attacking 

 orchard trees. Among divisional notes it is recorded that larva? were 

 received at this Department in September, 1880, from Mr. J. T. de Jar- 

 nett, Uatonton, Putnam County, Ga., with the report that the species 

 was doing damage to all kinds of oaks. 

 13892— No. 19 7 



