New York AGRICULTURAL ExpPpERIMENT STATIon. 451 
SINUATE PEAR BORER. 
(Agrilus sinuatus Oliv.) 
Description.— This insect was recently introduced into this 
country from Europe. It has become seriously injurious in 
some parts of the eastern United States. It makes long zig-ziz 
galleries between the bark and wood, finally girdling and killing 
the tree. It is said to live two years in the larval stage. The 
larva is slender, and has the first segment back of the head much 
enlarged. The adult is a small, slender beetle. The eggs are laid 
on the bark of the tree. 
Treatment.—When a tree becomes infested it is very difficult 
to get the borers out, and it is usually impractical to attempt to 
do so. As preventive measures some good may be done by plac- 
ing mechanical obstructions on the trunks, such as tarred paper 
wound about the trunk, or wire netting; the object being to pre- 
vent the adult from depositing eggs in the bark. Whitewashing 
the trunk with ordinary whitewash to which enough Paris green 
has been added to tinge it slightly, or with a strong soap wash, 
one pound of whale oil soap to one gallon of water, has been recom- 
mended. ‘he trunks should be kept covered with one of these 
washes during May and June. 
PEAR SLUG. 
(Selandria cerasi Peck.) 
Description.— The adult insect is a small, dark-colored, four- 
winged fy. ‘The slugs make their appearance in the latter part 
of May or early June. At first ight in color they soon become 
darker and are covered with an abundance of slime. ‘The slugs 
feed on the upper surface, skeletonizing the leaves, and where very 
abundant they cause serious injury. Leaves that are badly injured 
wither and fall. 
Treatment.— If upon examination it is found that the insects 
are likely to appear in suflicient numbers to cause much damage, 
no time should be lost in spraying the trees with Paris green. If 
the trees are being treated for fungous diseases the Paris green 
