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present summer it has never been found in the part of this peninsula lying north 
of Sturgeon Bay, so far as can he learned from fruit-growers in that region. In 
consequence of this, plum-growing is becoming an industry of some importance in 
that district. 
"Wishing to learn positively the extent to which this part of Wisconsin enjoys im- 
munity from the Plum Curculio, I visited Sturgeon Bay village about the middle of 
July, and made a careful observation of the Plum and Cherry orchards in the vicin- 
ity. North of the bay the most careful search failed»to discover a single curculio- 
infested Plum, though more or less of this fruit is grown on almost every farm and 
on many village lots. A very few infested cherries were, however, discovered, but 
in every case the owner of the trees declared that " wormy " cherries had not been 
known there until the present season. South of the bay the case was different. 
The plums were more or less infested, especially those lying toward the west side of 
the peninsula. In several instances the infection had not yet been discovered by 
the owners of the trees; in others it had been discovered, but all agreed that it was 
new in that locality. The invasion apparently proceeded from the southwest, as 
orchards appeared to be affected more on the southwest side than elsewhere. 
It is generally agreed by the farmers in the vicinity of Sturgeon Bay that the Pea 
Weevil, Brack us j)isi, is entirely absent from that region, though it is said that it was 
once present there. — [E. S. Goff, Wisconsin, Aug. 16, 1893. 
The Juniper Bark-borer in Nebraska. 
I send you a number of specimens of beetles found on one of my red-cedar trees, 
which are proving to be quite destructive. I have used several emulsions, but have 
not succeeded in " hitting " them. They bore into the axil of the twig until the 
twig falls over and dies, and then they fall off. Often they burrow on the outer 
angle and sometimes cut the twig off above the angle. The same tree from which 
these are taken was attacked in 1884 by the same beetle. If known, please send me 
name and remedy. — [R. Harvey, Nebraska, August 14, 1893. 
Reply. — The insect which you send, and which is affecting the red cedar in your 
vicinity, is known as the Juniper Bark-borer (Phlceosinus dentatus Say), a very small 
insect belonging to the family Scolytidse. This insect is making its appearance in 
the West at various points, and has already occasioned considerable loss and destruc- 
tion to the red cedar in different sections of Kansas and other Western States. Its 
normal region is included in the Middle States and Eastern States and Canada, 
where it affects both juniper and arbor vitai. In Kansas its introduction was traced 
to certain cedar posts brought to the lumberyards from Michigan and Arkansas, and 
its introduction into your section was doubtless by similar means. It is found to 
be attacked by a'parasitic fly belonging to the genus Spathius, and it was doubtless 
the increase of this or other parasites which led to the disappearance of this pest 
after its first appearance with you in numbers in 1884. It is quite likely that 
its abundance the present season will again result in a like increase of natural 
enemies, again reducing its numbers to a minimum. There is no remedy except the 
rather heroic one of cutting down and destroying all infested trees in the region in 
which it has become introduced or perhaps by weakening trees by injuring them 
artificially, so that the beetles will be attracted to these, preferring, as they do, dis- 
eased trees to vigorous ones. Later on the treatment is consummated by burning 
these trap trees. — [August 22, 1893. 
Spider Mimicry. 
At Jamesburg, X. J., in August, 1893, 1 found on a small oak tree what was appar- 
ently a gall, perfectly formed, growing on the upper surface of a leaf. On handling 
the leaf for closer inspection the supposed gall rolled off into my hand, leaving the 
surface of the leaf entirely free from any scar or other indication of the gall's pres- 
