14 
The larva feeds on the iuner bark or sap, stopping the flow of 
the sap, which sours the wood of the tree. A pear-tree may die 
in one season; a peach-tree probably not until the following 
spring. The insect bids fair to put an end to fruit-growing un¬ 
less arrested. Riley thinks the beetle was imported about 1877 
and disseminated from Northern and Western nurseries; says 
that it has no insect enemies; and advises removing and burning 
infested trees to prevent the beetles from-spreading. Beetles 
hatch at least two broods, one in April, the other in August. 
1885. 
Hamilton, John.— Short Note on Coleoptera. (Can. Ent., 1885, 
v. 17, p. 48.) 
“I have obtained this insect twice from hickory twigs placed 
in a box. The color of these is black, like S. 4-spinosus. I have 
others that are reddish brown, said to be from peach-trees. I 
have carefully looked for it several times in diseased trees of the 
last-mentioned species, and also in pear-trees affected by blight, 
but always with negative results.” 
Henshaw, Samuel. —List of the Coleoptera of America North of 
Mexico, p. 149. 
1886. 
Schwarz, E. A.—[Remark on Scolytus rugulosus .] (Proc. Ent. 
Soc. Wash., v. 1, p. 30.) 
States that specimens of Scolytus bred from hickory twigs by 
Dr. Hamilton, of Alleghany City, Penn., and referred by him in 
a recent number of the “Canadian Entomologist” to S. rugu¬ 
losus, are undoubtedly not of that species, but are apparently 
undescribed. 
Lintner, J. A.—A New and Destructive Borer to be conquered. 
(New England Homestead, Sept. 25, 1886, v. 20, p. 341; 
said to be copied in Country Gentlemen, Nov. 11, 1886, v. 
51, p. 853; abstract, as below, in Rep. State Ent., N. Y., 
1886, p. 152.) 
“A borer stated to have killed cherry, peach, and plum trees 
at Philadelphia, of which the appearance and habits are given, 
is probably (no examples sent) Scolytus rugulosus (Ratz). Its 
history in this country is detailed. Trees attacked in force by 
it cannot be saved. They should be cut down and burned. A 
soap and carbolic acid wash would act as a preventive of at¬ 
tack. Phlseotribus liminaris (Harr.) may also concur in above 
attack.” 
