280 College of Forestry 
from Onondaga County by Beauchamp. Campanulatus has 
been observed on the following plants: 
Broad-leaved Arrow-head (Sagit- .American Bulrush (Seirpus ameri- 
taria latifolia). canus). 5 
Pickerel-weed (Pontederia cor- White Water Lily (Castalia odor- 
data). ata). On leaves and stem. 
Water Willow (Dianthera ameri- Yellow Water Lily (Nymphaea ad- 
cana). vena). On leaves and stem. 
Lake Bulrush (Scirpus occiden- 
talis). 
Tt feeds on filamentous algw, desmids, diatoms, and on the 
dead leaves of Water Celery (Vallisneria spiralis). It is 
eaten by the Pumpkinseed. 
53. Planorbis parvus Say. Fig. 45, Nos. 4-6. 
This small Planorbis was observed only at three stations, 
a protected habitat in vegetation. As recorded from other 
places, parvus is found in protected places on lily pads, 
drift-wood, and debris of various kinds (Saginaw Bay, p. 
166; Tomahawk Lake, p. 235; Isle Royale, p. 293). It 
feeds upon the dead leaves of Cat-tail (Typha angustifolia) 
and has been observed in alge (Vaucheria) ; it is eaten by 
the Common Whitefish and the Pumpkinseed. 
54. Planorbis hirsutus Gould. Fig. 45, Nos. 1-3. 
This characteristic little wheel-snail was found at eleven 
stations but was common at only two. Under the names of 
hirsutus and albus (a European species which the American 
shell closely resembles) it is widely distributed in the United 
States. In the Saginaw Bay region (p. 166) it lives on Lly 
pads and driftwood, always in protected situations. In the 
Georgian Bay region (p. 101) it oceurs in muddy channels 
and muddy bays on smooth rocks covered with a light deposit 
of sediment. At Tomahawk Lake it was collected in quiet 
water habitats. 
Observed on the following plants: 
White Water Lily (Castalia odorata). Under side. 
Yellow Water Lily (Nymphwa advena). Under side. 
