54 College of Forestry 
Zone C. Submerged vegetation. 
Clasping-leaved Pond-weed (Po-  Hornwort (Ceratophyllum demer- 
tamogeton perfoliatus) . sum). 
Water Celery (Vallisneria spir- Water Milfoil (Myriophyllum spi- 
alis). catum). 
Water Weed (Hlodea canadensis) . 
ANIMAL LIFE (ZONE B). 
MOLLUSCA. 
Acella haldemani, on leaves and <Amnicola lustrica, on lily leaves 
stems of Cow Lily, White Lily (Nymphaea). 
and Pond-weed. Ancylus parallelus, on under sur- 
face of Cow Lily and White Lily. 
CRUSTACEA (AMPHIPODA). 
Hyalella knickerbockeri, on under surface of lily leaves. 
Station XI. Poppyeur Point, Bre Bay (Fiextp No. 228). 
Fie. 13. 
This habitat extends well into the bay. It is shallow for 
a considerable distance, averaging about eighteen inches, but 
becomes abruptly deeper, especially on the Poddygut Bay 
side where a depth of six feet occurs. The bottom is very 
stony and bouldery on a hard sandy substratum. The 
habitat is open and fully exposed to the violence of the waves. 
ANIMAL LIFE. 
MOLLUSCA. 
Elliptio complanatus, 2-3 inches Margaritana  margaritifera, 3 
long, common. inches long, rare. 
Galba emarginata, all dead, rare. 
INSECTA. 
Caddis-fly larvee (Helicopsyche borealis). 
Sration XII. Srconp Bay-trkre INDENTATION WEST OF 
Suaw Pornt (Fretp No, 232). Fie. 13. 
The shore line of this habitat is usually devoid of vegeta- 
tion. <A ridge of debris, washed in by the waves, usually bor- 
