63 
Late in August of the present year I found quite a colony, probably 
ten or twelve, on a single leat of the above-mentioned tree. They had 
but recently hatched, but tiny as they were—not more than an eighth 
of an inch in length—they had all the tubercles and other character- 
istics of the mature larva, except that the saddle-cloth-like spot was 
deep yellow instead of green and the central dorsal spot pinkish-gray. 
They had perforated the leaf with small irregular holes. Not thinking 
that they would readily loosen their hold on the leaf, I carried it care- 
lessly in my hand, and when I reached the house was much disappointed 
to find that but two larvee remained on it. As these thrived and per- 
fected their development to the point of inclosing themselves in cocoons, 
it is evident that Maple may be included in the list of their food-plants. 
The Cottony Maple Scale (Pulvinaria innumerabilis). This insect has 
not been troublesome in this part of Missouri since 1884; but in and 
around Rockford, LL, I learned that it had been so abundant on the 
Soft Maples for three successive seasons as to kill many young trees 
outright and greatly injure the older ones. I was told that the side- 
walks shaded by these trees became so defiled and slippery from the 
exudations of the scale insect that it was difficult and unpleasant to 
walk on them. The citizens had consequently conceived a prejudice 
against the Soft Maple, and many were being cut down or dug up and 
replaced by other trees. 
A new Leaf-bug on Maple (Lygus monachus Uhiler, n. sp.).*—This bug 
came under my notice for the first time late in the spring of 1882 in- 
festing the growing points of young Soft Maples (Acer dasycarpum). 
Most of the insects were at that time mature, but two or three pup 
were found, enough to indicate that the leaves of the maple had been 
their breeding place. A few specimens were taken, but, as the insect 
was not present in sufficient numbers to give it importance as an injuri- 
ous species, not much attention was paid toit. During several succeed- 
ing springs I occasionally came across a mature specimen—which, from 
its exceeding agility, both in running and flying, generally evaded capt- 
*Mr. Ubiler has given us the following description of this new Lygveid: 
LYGUS MONACHUS n. sp.—Long-oval, pale green or testaceous, coarsely punctate 
above, sericeous pubescent. Face convex, highly polished, bald; base of vertex with 
a longitudinal impressed line, towards which a similar line runs obliquely each side 
from the inner corner of the eyes; antennz sparsely and minutely pubescent, basal 
joint thickest, a little longer than the head, tapering at base, second joint thrice as 
long as the basal, infuscated and a little enlarged towards the tip, third and fourth 
setaceous, together not as long as the second. Pronotum highly polished, convex, 
coarsely punctate in transverse wavy lines, each side with a dark brown vitta, or 
long spot; lateral margin smooth, callous at base, the humeral angles subacute, cal- 
losities prominent, convex, almost confluent on the middle; lateral flap of pronotum 
irregularly punctate. Pectoral pieces pale, impunctate. Legs pale green, feebly 
pubescent; apex of posterior femur usually with one or two fuscous bands, tip of 
tarsi and the nails black. Scutellum moderately convex, excavated at base, trans- 
versely obsolete-punctate, more or less infuscated. Corium coarsely, transversely 
rostrate-punctate, the clavers more or less infuscated, sometimes with all but the 
