161 
Time, 8:40 a. m.; thermometer on northwest side of house 70° F.; in my room, 70°. 
When placed in the bag it rose 10° in one minute, and in six minutes more registered 
88°. This temperature continued for two weeks, when it commenced to fall, the 
beetles soon after ceasing to emerge. 
REAPPEARANCE OF ICERYA PURCHASI. 
We learn from a recent California journal that the Fluted Scale has 
made its appearance in considerable numbers at St. Helena, Napa 
County. This is quite in accordance with our predictions, for we have 
by no means believed that the pest was fully exterminated by the 
Vedalia. 
THE PEAR MIDGE IN NEW YORK. 
We have not yet noted the fact that Dr. Lintner has discovered the 
Pear Midge (Diplosis pyrivora), which we treated in our Annual Report 
for 1885, along the Hudson River. Up to the past year it was known 
only in the single locality near Meriden, Conn., where we studied it. 
A POSSIBLE NEW INSECTICIDE. 
O. Loew, in the Berichte der Deutschen Chemischen Gesellschaft, 
XXIII, page 3203, announces that hydrazine sulphate in the proportion 
of one-fifth of a gramme to 1 litre of water kills immediately alge, fission _ 
organisms, molds, schizomycetes, and other low types of water organ- 
isms. Itis also poisonous upon dogs and Guinea-pigs, and unfortunately 
is also injurious to young shoots and buds of plants. The Gardener’s 
Chronicle for August 15 recommends its trial under the head of “A 
New Insecticide,” but its deleterious effect upon both plant life and the 
life of mammalia would apparently restrict its use to the comparatively 
small group of household pests. 
BITTEN BY A KATIPO. 
We are indebted to Mr. R. Allan Wight, of Auckland, New Zealand, 
for the following clipping from a New Zealand paper: 
AUCKLAND, May 11. 
A few days ago the well-known waterman of this port, Harry Keane, received a 
bite from what he states was a Katipo, while down on the island of Motutapu rabbit 
shooting. The bite resulted in great pain and considerable swelling of the leg on 
which he was bitten. He has been in the hospital ever since, ard it is not yet cer- 
tain whether he will not lose his leg. 
ENTOMOLOGICAL SOCIETY OF WASHINGTON, 
THURSDAY, OCTOBER 1, 1891. 
The following persons were elected members of the Society: E. W. Doran, A. G. 
Masius, F. C. Test, W. T. Swingle, active members; H. E. Weed, W. H. Harrington, 
E. A. Popenoe, corresponding members. 
Mr. Heidemann exhibited some interesting new species of Capside taken the past 
season on Red Cedar, Willow, and Linden. 
