46 



A little scrapiii,ij^ of the bark with loug-liaudled scrapers, such as are 

 used by Mr. SoutUwick in liis admirable work in tlie parks of ISew York 

 City, and the application of a strong whale oil soap solution, either with 

 a long-handled whitewash brush or even as a strong spray, in the late 

 fall or early spring, Avill largely obviate difficulty the ensuing summer. 



Little more need be said about this insect. That it is a rather serious 

 enemy of the maple no one is in better position to say than Mr. Clark, 

 the city forester of Springfield, and it Avill be well for those in charge of 

 the shade trees in other cities to keep a sharp lookout for this destruc- 

 tive species. 



Fifteen years ago, when Miss Emily A. Smith first studied this insect 

 at Peoria, 111., she found that it was extensively parasitized by a very 

 minute chalcidid, which she called Acerophagus coccois, and which she 

 considered at some length in her j^aper. Coming to Washington a year 

 or so later, Miss Smith brought specimens of this parasite with her, and 

 it i)roved to belong to Foerster's genus Ehopus, a form of marked 

 structural peculiarities. I have carefully preserved in rearing jars all 

 of the specimens of the Pseudococcus received since, whether from 

 Illinois, Massachusetts, or Rhode Island, in the hope of again rearing 

 this interesting parasite. I have been unsuccessful, however, until very 

 recently, and was consequently greatly i)leased at my first success, on 

 August 5, in rearing a small series from specimens of the scale insect 

 sent in by Mr. Clark, of Springfield. Uliop^is cocvois therefore exists 

 here in Springfield, and may be of some aid to the city forester in his 

 work against the Pseudococcus. 



OTHER SPECIES. 



The most important of the iTew England shade-tree insects remain- 

 ing is the white-marked tussock moth [Orgyia JeucostUjma)^ and this 

 insect, aside from the gypsy moth, is really the principal shade-tree 

 insect in eastern Massachusetts. This species is so well known and so 

 successfully fought in K"ew York that it is strange that it should be 

 allowed to spread unchecked in most cities. This insect and the fall 

 web worm, a few borers, and, sooner or later, the bagworm (in the 

 northern portions ouly),may be successfully fought by individuals; and 

 this brings me to a rather good plan which has recently been started in 

 Washington. A number of years ago certain enterprising and imblic 

 spirited citizens in Brooklyn, N. Y., started a society known as " The Tree 

 Planting and Fountain Society of Brooklyn," its expressed objects 

 being ^^ * * * to promote the i)lanting and protection of trees, the 

 erection of drinking fountains, and otherwise to render the city of 

 Brooklyn attractive." The plan of the society is admirable, but the 

 i-esults as regards shade-tree insects have not been good. In fact, 

 the shade trees in Brooklyn are in very bad condition, as those of us 

 who were at the Brooklyn meeting of this association can testify. This 



