240 NEW YORK STATE MUSEUM 
dition revealing a very serious attack. One side of each twig was nearly 
covered by the adults while the young fairly swarmed over everything 
(fig. 20). I have also received twigs badly infested with this scale from 
Batavia, Patchogue and Flushing, N. Y., and Arlington, N. J. 


Ps Se a 
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Fig. 1g Young of PEMPHIGUS TESSELLATUS (original). 
Lecanium armeniacum Cvaw. One of the interesting features of 
the year was the detection of this scale, identified by Mr Pergande, in Erie 
county, N. Y. In response to inquiry about its introduction, Mr Hayes 
stated that he could not account for it in any manner. The vine upon 
which the species was found had been planted ro years. His neighborshad 
not set out any Californian stock and he had used no fruit from that state 
for several years. A possible source of introduction is the sending to this 
state in 1896 of examples of this scale infested with Comys fusca, by Mr 
Ed. M. Ehrhorn, Horticultural commissioner of Santa Clara county, 
California. This was done, it was stated, in the hope that the parasite 
would attack the New York plum scale. 
Lecanium cerasifex /itch. ‘This scale, identified as probably this 
species by Mr Coquillett, has been very injurious to several soft maples 
in Albany the past two or three years. The trees have been dwarfed by 
the attack and each summer are more or less blackened by the copious 
honey dew secreted by the insects. Many of the limbs were nearly cov- 
ered with the scales on their under surface and during a portion, at least, 
of July and early in August the young swarmed over branches and leaves. 
San Jose scale. Thispest, Aspidiotus perniciosus Comst., has demon- 
strated its ability to thrive in the Hudson river valley as far north’ as 
Albany, at least. Just across the river at East Greenbush, an infested 
