50 College of Forestry 
Submerged Plant Association (Habitat 4). 
The submerged plants embrace the usual species of such a 
habitat. They were in 4 feet of water. 
Clasping-leaved Pond-weed 
tamogeton perfoliatus) . 
Water Celery (Vallisneria spira- 
lis). 
(Po- 
ANIMAL LIFE. 
Water Weed (Hlodea canadensis) . 
Hornwort (Ceratophyllum demer- 
sum). 
(FROM HABITAT 1). 
MOLLUSCA. 
Lymnaea stagnalis lilliane, near 
shore. 
Galba catascopium, on rocks, on 
Scirpus americanus, and on 
sandy spots. 
Galba emarginata, dead shells, evi- 
dently from deeper water. 
toniobasis livescens, on rocks. 
Planorbis trivolvis, var., on rocks, 
on Scirpus americanus, and on 
sandy spots. 
Planorbis campanulatus, on rocks, 
on Scirpus americanus, and on 
sandy spots. 
Physa ancillaria warreniana, on 
Scirpus americanus, and on sand 
near shore. Adult and young. 
Elliptio complanatus, in sandy - 
spot, small. 
Anodonta cataracta, in sandy spot, 
large. 
INSECTA. 
Caddis-fly larvee (Helicopsyche borealis), on rocks. 
The mollusks covered the bottom of this bay in great 
abundance. 
Sration VI. 
Heap or Bie Bay (Fr=tp Nos. 268, 269). 
The zonal character of the vegetation at this location was 
marked. For the distance of several hundred feet, an area of 
clear water, about 25 feet in width, bordered the shore, the 
water being about 20 inches in depth. No mollusks were 
observed in this sandy strip. This area is bordered by a wide 
zone of plants, in about four feet of water. The plants noted 
were: 
Lake Bulrush (Scirpus occiden- Floating Pond-weed (Potamogeton 
talis) . natans) . 
Pickerel-weed (Pontederia cor- Sweet-scented Water Lily (Cas- 
data). talia odorata). 
Cow Lily (Nymphaea advena). 
