The Relation of Mollusks to Fish in Oneida Lake 89 
southeastward to off Deer Point; thence back to starting point 
off Milton Point. 
Borrom: Sandy or muddy, with occasional boulders. 
Water: 8 to 10 feet deep. 
VEGETATION. 
Water Celery (Vallisneria spira- Water Weed (Hlodea canadensis). 
lis). Hornwort (Ceratophyllum  de- 
Clasping-leaved Pond-weed, (Pota- mersum). 
mogeton perfoliatus) . Water Milfoil, (Myriophyllum spi- 
Various-leaved Pond-weed (Pota- catum). 
mogeton heterophyllus) . Stonewort (Chara species). 
ANIMAL LIFE. 
MOLLUSCA. 
Planorbis campanulatus, in vege- Physa ancillaria warreniana, in 
tation. vegetation. 
A Physa, mostly young, was abundant on the leaves of 
Elodea canadensis. 
CRUSTACEA, 
Amphipod (Gammarus fasciatus), in vegetation. 
INSECTA. 
Caddis-fly cases (Leptocella spe- Damsel-fly nymph (Knallagma sig- 
eles). natum). 
Caddis-fly larvee (Polycentropid). 
HIRUDINEA. 
Leech (Glossiphonia picta). 
Station XLI. Muippie or Laxe (Frierp No. 274). 
Dredgings were made east and west in the line of the chan- 
nel, and north and south on a line between Shepard Point 
and Milton Point. 
Borrom: Hard sand, with occasional boulder. Warer: 
10 to 16 feet deep. 
Below a depth of 10 feet no vegetation was observed, but 
clams were numerous. As many as 8 were brought up at one 
