64 College of Forestry 
MOLLUSCA, 
Elliptio complanatus, abundant. 
Anodonta cataracta, common. 
Anodonta  implicata, common, 
gravid. 
Anodonta grandis footiana, rare. 
Lampsilis luteola, rare, gravid. 
Lampsilis radiata, abundant. 
Spherium vermontanum, rare. 
Goniobasis livescens, abundant, on 
rocks. 
Amnicola lustrica, rare. 
Physa ancillaria warreniana, rare. 
Planorbis campanulatus, rare, on 
rocks. 
Planorbis hirsutus, rare. 
Galba catascopium, common, on 
rocks, 
Galba emarginata, 1 dead speci- 
men. 
INSECTA. 
Caddis-fly larve (Helicopsyche borealis). 
Habitat 2. 
Fig. 18. 
Borrom: 
WATER: 
VEGETATION: 
2-3 feet deep. 
Zonal. 
Western part of Muskrat Bay (Field No. 239). 
Sandy silt, near shore, bouldery near center. 
Zone A.—Shore. 
Water Willow (Dianthera ameri- 
cana). 
Broad-leaved Arrow-head 
taria latifolia). 
Pickerel-weed  (Pontederia 
data). 
(Sagit- 
cor- 
Bur-reed (Sparganium  ewryear- 
pum). 
American Bulrush (Scirpus ameri- 
canus) . 
Lake Bulrush (Scirpus occiden- 
talis). 
Zone B. Center of Bay. 
Lake Bulrush (Scirpus occidentalis) . 
ANIMAL 
LIFE. 
Mollusks were abundant in the sand and among the 
boulders, especially in Zone Bb. 
MOLLUSCA. 
Elliptio complanatus, abundant. 
Alasmidonta undulata, rare, only 
one found. 
Anodonta margimata, rare. 
Anodonta cataracta, common, 
gravid. 
Anodonta 
gravid. 
Anodonta grandis footiana, com- 
mon. 
Spherium vermontanum, common. 
Campeloma integrum, common, in 
sand. 
amplicata, common, 
