120 College of Forestry 
obtaining data on the seasonal distribution and seasonal suc- 
cession of certain insect forms. Such data was obtained 
during the past summer (1917) and is here presented. 
These observations were made at the Catskill Forest 
Experiment Station of the New York State College of For- 
estry, near Tannersville, N. Y. The region covered is that 
extending north from the experiment station for about three- 
quarters of a mile and lying along each side of the road 
known locally as the County road. This varies in elevation 
from 2,150 feet at the experiment station to about 1,950 
feet where the County road joins the main road to Elka 
Park. The area covered consists of about half wooded land 
and half clearing, and is bordered both on the east and on 
the west by more extensive forests which have not been lum- 
bered for many years. The cleared land consists of irregular 
areas on each side of the road from which each year a sparse 
crop of hay is harvested. This yearly mowing keeps down 
young trees and also suppresses shrubs such as wild spireea, 
blackberry and raspberry. Thus these shrubs are to be found 
only along the margins of the clearing, surrounding occa- 
sional isolated trees and large rocks, and in several swampy 
areas. The impression should not prevail, however, that the 
wild spirza is either scanty or scattered, for such is far from 
being true. The area covered includes many thousands of 
the shrubs. Often a small clearing is bordered by a con- 
tinuous fringe of wild spirea, and in one ease a solid block 
of this shrub covering about a half acre occurs in one semi- 
swampy area. 
It will thus be seen that conditions here are ideal for many 
insects, especially such as feed upon pollen in their adult 
stage and live in dead or decaying wood in their larval con- 
dition. The adjacent forests, especially that towards the 
east, has been practically unmolested for years, and the 
numerous dead and decaying trees, which are always present 
in considerable numbers in undisturbed timber lands, serve 
as an excellent breeding place for the larvee of the very forms 
which as adults are characteristically feeders upon pollen. 
Thus it happens that these insects, notably the lepturids — 
