REPORT OF THE ENTOMOLOGIST. 73 
To destroy the well-known locust-borer, Clytus (Arhopalus) pictus, or 
flexuosus, a beautiful variegated black and yellow Fig. 23. 
beetle, it has been recommended to apply soft \ 
soap to the trunks of very young trees every sum- 
mer, about the first of August, or earlier, in the 
Southern States. Another insect of the same fam- 
Fig.24. ily, Clytus saggtitatus, Germ., (pubes- 
7 Gens, Hald.) was reared during the 
~~ last season from dry pine wood. The 
colors are brown with yellowish-white 
markings. 
The perfect beetle of Heliomanes 
bimaculatus, Say, just emerged from the pupa case, Was found 
in a hole in the wood of a walnut branch, where it Fig. 25. 
had evidently been bred. This insect, therefore, ae 
may be classed as injuring the walnut. It resembles very 
strongly in appearance and habits the Tessaropa tenwipes of 
Fig. 26. Haldeman, which also feedsin the larval state 
Bash | upon the wood of hickory and walnut. This 
3 ~~ insect is figured here, as it is said to bea very 
rare insect in collections, and not heretofore 
figured. Another small, long-horned beetle, 
Leiopus wanthoxyli, was found by Dr. Shimer to undermine the bark of the 
prickly-ash when the wood had recently died. None of the last three 
mentioned insects can do much damage, and are merely mentioned and 
figured as feeding on substances not hitherto known. 
As the elm-tree beetle, Galeruca ealmariensis, Fab., has pig, 97. 
been exceedingly injurious to the elm trees during the past 7. 
season, although the natural history and remedies were de-¢ 
scribed and the insect figured in the Agricultural Report for FOR 
1867, it will not, perhaps, be out of place to give it another — 
short notice, as apparently no steps have been taken to arrest its pro 
gress. The eggs of this beetle are deposited in clusters on the under 
side of the leaf in May and June. These eggs are oval and are ar- 
rapged in two or three rows together along the ribs of the leaf, and are 
fixed by one end to the surface. The larve, when hatched out, eat the 
soft inner. substance of the foliage, leaving the net-work of veins and 
ribs, causing the leaf to assume a scorched and brown appearance. 
When fully grown, the larve, as they spin no silken web to let_them- 
selves down by, descend to the ground by the limb, if undisturbed. The 
pupa is formed immediately in the neighborhood of the trunk, on the 
surface of the ground, or under loose stones near the tree, and resembles 
in size and color grains of whitish wheat. They remain in this helpless 
and almost motionless state a few days, when they may be destroyed 
readily with hot water, or by crushing under foot. The perfect beetles 
appear in a few days, and immediately fly up into the tree to lay eggs for 
a second generation, which frequently destroys every leaf on the tree. 
This inséct, imported from Europe as early as the summer of 1837, de- 
stroyed the foliage of the elms in Sevres, France, and in Germany, in 1839, 
trees were very much injured. I have observed that the American elm is 
not so much injured by these insects in Washington as the HKuropean 
species. Syringing the trees with strong tobacco-water has been tried 
with some good effect, but the larvae not touched by the fluid are merely 
knocked down by the concussion, and, if nearly ready to change into pupe, 
effect their transformation where they fall. It has been recommended 
to place around each tree small, tight, square boxes or frames, a foot or 
