92 College of Forestry 
ANIMAL LIFE. 
MOLLUSCA. 
Elliptio complanatus, common. Spherium vermontanum, not com- 
Lampsilis luteola, rare. mon. 
Lampswis radiata, common. Goniobasis livescens, common. 
Lampsilis iris, rare. Amnicola lustrica, not common. 
Margaritana margaritifera, rare. Galba catascopium, common. 
Anodonta cataracta, common. Planorbis antrosus, rare. 
Anodonta implicata, common. Planorbis campanulatus, rare. 
Anodonta grandis footiana, com-  Planorbis hirsutus, rare. 
mon. Physa ancillaria warreniana, rare. 
Strophitus undulatus, rare. The last four are emigrants from 
the next type of habitat. 
INSECTA. 
Caddis-fly larve  (Helicopsyche Whirligig beetles (Gyrinus ventra- 
borealis) . is). 
Caddis-fly cases (Leptocella) . Whirligig beetles (Dineutes assi- 
milis). 
CRUSTACEA. 
Crawfish (Cambarus propinquus). 
II. Water-Edge Type. (Figs. 14, 16, 27.) 
Stations TI],*: V; XIV, XX, XXV, XXVip ees 
XXXI,* XXXI,* XXXII. This includes that part of the 
shore from the water line to about 8 inches in depth. It may 
be simply hard sand, or it may be rocky. When uprooted 
vegetation is carried on shore it affords food for the inhabi- 
tants. In some cases the bank is grassy and has been under- 
mined a few inches, forming a vertical bank, a foot or less 
in height. Usually this habitat is free from vegetation. This 
type is always more or less protected from the rough water of 
the lake by a growth of lakeward vegetation of greater or less 
extent. Mollusks live abundantly on the stones, gravel and 
sand or under the protection of the overhanging bank. 
ANIMAL LIFE. 
MOLLUSCA, 
Campeloma integrum, common. Galba catascopium, not common. 
Lymnea stagnalis lillianw, abun- Planorbis campanulatus, common. 
dant. Planorbis binneyi, abundant. 
