48 College of Forestry 
INSECTA. 
Whirligig beetles (Gyrinus ven-  Caddis-fly larve  (Helicopsyche 
tralis). borealis). 
Whirligig beetles (Dineutes assi- 
milis). 
Station V. Ice Housr Bay (Frexrp No. 230). Fie. 12. 
A small, round indentation or bay, well protected from the 
winds and waves on the south, west and north sides, but 
widely open on the east side. The water on the south and 
west shores is shallow, ranging from one to three feet in 
depth. The bottom is bouldery except in small spots which 
are of hard sand. The vegetation is fairly uniform, consist- 
ing of : 
Habitat 1. 
American Bulrush (Scirpus ameri- Floating Pond-weed (Potamogeton 
canus) in water 10-24 inches natans) in water 10-24 inches 
deep. deep. 
Lake Bulrush (Scirpus occiden- 
talis) in water 36 inches deep. 
Habitat 2. 
At the west end of the bay there is an extensive area of 
Cat-tail (T’ypha angustifolia) with occasional plants of : 
Arrow-head (Sagittaria latifolia). Pickerel-weed (Pontederia  cor- 
data). 
Habitat 3. 
The north side of the bay, on which the ice house of the 
People’s Iee Company stands, is bordered by a heavy zone of : 
Salt Reed grass (Spartina cyano- Bulrush (Scirpus smithii). 
suroides) . Lake Bulrush (Scirpus occiden- 
Water Willow (Dianthera ameri- talis). 
cana). 
The last named plant borders the plant association where 
the water deepens, forming a channel 4-5 feet deep. 
