New York AGRICULTURAL EXPERIMENT STATION. 411 
caterpillars and prevent even greater injury than is now 
accomplished. A number of birds are known to feed upon the 
larvee, especially on the younger stages. The fact that our 
native birds are present in cities in comparatively small num- 
bers has been assigned as a reason for the greater abundance 
of caterpillars in cities than in the rural districts where birds 
are more plentiful. 
Insoct parasites.— In addition to the birds the moth has a 
large number of parasitic enemies, including some very active 
species. During the past season, parasites have been nu- 
merous. Examinations of cocoons about Geneva indicated 
that 60 per ct. of them were parasitized, while in the vicinity 
of Lockport the parasitism of cocoons in some orchards 
reached 80 per ct. Mr. B. D. Van Buren reports that in some 
of the localities in Buffalo, where the caterpillars were very 
numerous and the trees had been stripped of their foliage, 
95 per ct. of the cocoons were parasitized. In this latter in- 
stance only an occasional egg mass could be found, although 
the cocoons were distributed in considerable numbers over the 
trees. Of the parasitized cocoons examined at Lockport and 
Geneva, fully 95 per ct. were infested with Pimpla inquisitor 
and P. conquisitor, the former species being the more numer- 
ous. A few cocoons were found infested with larve from which 
a number of tachinid flies were bred. Through the courtesy 
of Dr. Howard, these were examined by Mr. ©. H. T. 
Townsend and identified by him as Tachina clisiocampae 
Towns. and Sisyropa sp. nov. 
MEASURES FOR THE CONTROL OF THE .TUSSOCK 
MOTH. 
IN ORCHARDS. 
1. Collecting egg-clusters.—A. severe outbreak of this pest 
in fruit orchards, such as occurred during the past spring in 
Niagara County, could be entirely prevented by destroying the 
eges of the insect. These eggs are deposited in clusters and 
appear as a mass of white froth, about one-half inch wide and 
