February, ’24] crossman & Webber: gipsy moth parasites 
75 
Parasetigena segregata 
Blepharipa scutellata. 
Tachina larvarum.... 
Carcelia gnava.. 
Lvdella nigripes. 
Zenillia libatrix. 
Sturmia gilva. 
Compsilura concinnata 
27,248 
9,148 
144 
75 
114 
16 
227 
6 
Total 
36,978 
The difference in the numbers which were reared and the numbers 
actually received is accounted for by so many different handlings and the 
necessary opening of packages at frontiers for customs inspection. 
In one case quite a number of Tachinid maggots which were in sawdust 
in a suit case being transported from Debrezcen to Budapest for repack¬ 
ing, worked their way out through the corners of the case and dropped 
onto the seats below, much to the discomfort of the passengers in the 
compartment. 
In addition to the Tachinids mentioned above, 2481 cocoons of A. 
fulvipes were received from which 230 adults were obtained. These 
were bred through several generations at the laboratory and 15,000, 
adults were liberated in New England during the summer and fall of 
1923. 
At present it seems somewhat doubtful whether A. fulvipes can be 
established in New England, because of its need of a suitable hibernating 
host. However, there is still a possibility and the attempt to introduce 
this species should not be discontinued until it is positively proven that 
it cannot be done. The establishment of Parasetigena in New England 
seems reasonable to expect. It is single-brooded and has been reared 
from other hosts but it does not appear that these are necessary for its 
establishment. The several other species introduced this summer were 
not obtained in numbers sufficient to liberate and were used for life 
history investigations. 
The fact that several species of Tachinids were recovered in relatively 
small numbers as dispar parasites at Debrezcen in 1923 does not signify 
that these species are always minor parasites. In other areas some one 
of them might be the predominating species. In Europe one species of 
parasite will predominate in a certain year in one area, while in another 
section a different species will be the most abundant. In New England 
some of the introduced parasites are very local in their activities and 
host larvae collected in one area will show a high percentage of parasitism 
