REPORT OF THE STATE ENTOMOLOGIST 1901 829 
members were brought together in one collection, that the com- 
parative differences between them might be more easily seen. 
The 39 species represented include, among others, the two very 
common and injurious forms known as the appletree bark louse 
and the seurfy bark louse. The notorious San José scale insect 
is well represented, and its close allies, the English fruit tree 
scale insect, the cherry scale insect and Putnam’s scale insect, 
also find a place in the collection. These more important 
enemies of fruit trees have been treated of in considerable 
detail and admirably illustrated in colors in bulletin 46 of the 
New York state museum. Another very important scale insect 
included here is the elm bark louse, a species which is noticed 
in some detail and illustrated in colors in the 5th report of the 
fisheries, game and forest commissioners of New York. 
‘Forest insects (nos. 203-51). This very important group is 
represented in the collection by 49 species, the result mostly of 
recent collections made in the state. Dr A. D. Hopkins, who is 
a recognized authority on this subject, estimates the total 
annual loss caused by insects in this country in forest and forest 
products at the enormous sum of $25,000,000. This is a group 
to which comparatively little attention had been paid in New 
York till the state entomologist took up the study of it several 
years ago. Among the more important forms represented in 
this collection may be mentioned the pine “sawyer,” a large 
grub which frequently causes much injury to logs allowed to lie 
for some time in mill yards. A number of species of bark- 
borers are represented. They are of special interest, because 
several of them are quite injurious to soft woods in the Adiron- 
dacks, while other species are killing pine in the Hudson river 
valley and on Long Island. The forest tent-caterpillar, the 
pest which has been ravaging our hard maples in recent 
years, is well represented in the collection, along with some of 
its natural enemies. A summary account of this insect, illus- 
trated by colored figures, has been given by the state ento- 
mologist in the 4th report of the fisheries, game and forest com- 
missioners of New York. 
4 
