63 



Late in August of the present year I found quite a colony, probably 

 ten or twelve, on a single leaf 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, aud when I reached the house was much disappointed 

 to tind that but two larvae remained on it. As these thrived and per- 

 fected their development to the point of inclosing themselves in cocoons, 

 it is evident that Maple maybe included in the list of their food-plants. 



The Cottony Maple Scale (Pidvinaria innumerabilis). This insect has 

 not been troublesome in this part of Missouri since 1884; but in and 

 around Ivoekford, 111., 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 Uhler, 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 pupae 

 were found, enough to indicate that the leaves of the maple had been 

 their breeding place. A lew 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 to it. During several succeed- 

 ing springs 1 occasionally came across a mature specimen — which, from 

 its exceeding agility, both in running and flying, generally evaded capt- 



* Mr. Uhler Las given us the following description of this new Lygaeid : 

 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; antennae 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 ;i dark brown vitta, or 

 long spot ; lateral margin smooth, callous at base, the humeral angles subacute, cal- 

 losities prominent, convex, almost continent on the middle; Lateral Map 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. Scntellum 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 tin 



