BIOLOGICAL RECONNOISSANCE AT FLATHEAD LAKE. 91 
Introduction. 
The material presented in this bulletin represents the work of four 
seasons in the region under discussion. The bulletin is not intended as 
a dissertation on a technical subject. The notes presented are given with 
the idea (1) of describing a region in which considerable work has been 
done, and in which more will be done; and (2) to indicate to future 
collectors in the state regions where collecting may be carried on to 
advantage, and some of the finds to be expected. 
The material collected is being worked over as rapidly as time will per- 
mit, and in due time technical papers will be presented. Nearly 1,500 
shells of the species Pyramidula strigosa have been gathered, from alti- 
tudes ranging from 2,300 feet to 8,900 feet. This gives an excellent series 
for studying variation. This work is being conducted in the laboratory at 
the University. A series of about 1,300 butterflies has been taken, most 
of which have been expanded. Many moths have also been secured. 
Large collections of Odonata have been secured, and as soon as the east- 
ern part of the state is more fully covered this group of insects will be 
taken up, a treatise on those in the western part being now in manuscript. 
The botanical collections number thousands of specimens, and when the 
work of identification and labelling is completed the University will have a 
very creditable collection of the plants of the state. The collection em- 
braces specimens from varying altitudes up to 10,000 feet, and from locali- 
ties heretofore unexplored. Included among these is a large series of 
lichens. 
A large collection of entomostraca has been made, during the several 
seasons, and from many bodies of water. A portion of the material has 
been worked over and the remainder is now being examined. 
The accompanying illustrations were all taken by members of the 
station staff or those attending the station. Due credit is given for each. 
Some of the cuts have appeared elsewhere, for which acknowledgement 
has been made in the proper place. 
The bulletin will place on permanent record much information which 
is important, and which in a few years would be lost or very difficult to 
secure. 
Bulletin No. 1 of this series, “Summer Birds of Flathead Lake,” by 
P. M. Silloway, is out of print; the large edition having been exhausted 
a short time after its publication. 
The author takes this public manner of expressing his high apprecia- 
tion of the very cordial support given by those who have accompanied 
him on collecting trips and assisted in the work at the Station at Flat- 
head lake. The recollection of smoldering campfires in many wild 
places, with sleeping bags containing tired but happy naturalists, working 
