28 THE AMERICAN MIDLAND NATURALIST 
AREA IX. 
Boundaries, Fountain City, Wis. to Winona, Minn. (High 
Bridge). Status, open to fishery. Length Linear Miles, 8.6. 
Physical Conditions, 2 ft. high water; current 4 miles. Bot- 
tom, gravel and mud, with less amount of riff-raff than in 
preceding areas. 
LOCALITIES REPORTED UPON. (ref. maps.) 
IX—2. South end of Island 62, across the mouth of a 
slough, starting 20 ft. from nearest shore. Aug. 18, 1920. 
1X—22-- Straight. Sloush,. about. 3 -miles). fronv «mouth; 
across the mouth of the first slough above island with 655 
elevation. 25 ft. from north shore. Aug. 21, 1920. 
IX—31. 800 ft. northwest of the N. W. R. R. bridge at 
Winona, 35 ft. from sheer boom. Aug. 238, 1920. 
NOTES ON AREA. 
An old bed of “niggerheads” existing at Wild’s Landing 
was found to be absolutely covered with sand deflected by the 
dams. No trace of a bed said to exist in the vicinity of 
Island 55 was found. The best collecting in this area was 
from the sandbars, and in the lower portion of the area we 
frequently encountered very large specimen of Anodonta * 
grandis. Many stranded pocketbooks, (Lampsilis ventricosa) 
were found cut open for pearls, presumably by the foreign 
element of the population of Winona. 
Locality IX-22 is in the upper portion of Straight Slough 
near Winona. At the present time it is a flourishing bed, 
indicating that conditions are favorable here for mussel 
growth. Fresh water snails, (Plewrocera acuta, Raf.) and 
a form of Sphaerium stamineum Conrad, as determined by 
Dr. Bryant Walker, were abundant here. 
