al ea 
It will be noted that there is a relation between the percentage 
of Anastatus living and the eggs that hatched in the various collec- 
tions. The temperatures given are the lowest reported by the Weather 
Bureau for towns in which collections were made. They do not, of 
course, necessarily indicate the lowest temperature to which the eggs 
were exposed. 
Other collections of gypsy moth egg clusters were later received 
from Meine, New Hampshire, Vermont, Massachusetts, and Connecticut to 
determine further the effects of the low winter temperatures. While 
a final report on these collections can not be made at this time it is 
evident that the percentage of fertile eggs dead is higher in some col- 
lections than in any of those referred to above, particularly in col- 
lections made in parts of Maine, New Hampshire, and Vermont where colder 
teriperatures occurred. 
Mortality of Euro ean pine shoot moth due to low temneratures.-- 
J. V. Schaffner, Jr., of the Melrose Highlands, Mass., field laboratory, 
reports concerning collections of larvae of Rhyacionia buoliana Schiff, 
obtained from the field this winter and examined by him and C. L. Gris~ 
wold to determine how many of the larvae were dead. Late in January 
collections of infested pine tips from four localities in New York were 
received from H. L. McIntyre, of the New York Conservation Department. 
The numbers of larvae in these lots of material and the percentages 
found to be dead were as follows: 
nt ne eee ee 
Locality Total larvae Larvae dead 
_ Number Percent 
Cross River, N. Y. 36 91.6 
Kensico Dan, N. Y. 59 61.5 
Syosset, N.Y. 48 27.0 
Jericho, N. Y. 35 65.7 
nee es apne entree 

een ne nae ee 
In view of the fact that there was another spell of unusually 
cold weather in February it was decided to make further examinations 
of infested material. sdditional collections were received from New 
York and some were made in the vicinity of Boston. The results of 
the examination of this material are given below: 
