The Protozoa of Sandusky Bay and Vicinity. 425 
the Water Works cove. This is separated from the lake by a 
railroad embankment, but is open to the bay. In this cove is a 
smaller cove which I have designated as the Basket Factory cove, 
where a great deal of timber is allowed to remain before being 
manufactured into baskets. There is a bare possibility that the 
large number of species ascribed to this locality may be due to 
the fact that they were imported with the timber. I am inclined 
to think, however, that this if true would furnish conditions 
favorable to the development of the Rhizopods. The basket 
factory cove was not unusually rich in Rhizopods as one would 
expect it to be if the species had been imported. 
These three localities, Biemiller’s cove, the Water Works 
cove ,and the Basket Factory cove, furnish by far the larger part 
of the fauna of this region. All three of these localities contain 
enormous numbers of small fish and are densely packed except 
in the channels with vegetation. 
One can not help being impressed even on superficial obser- 
vation of the importance of the Protozoan fauna as a means of 
food supply for small fish, although no attempt has been made 
as yet to determine just what species and to what extent they 
are used as a source of food supply. The work was undertaken 
with a view of determining first just how extensive and in what 
manner the species were distributed in this region. The list is 
not offered as a complete survey of the Protozoa of this region. 
Undoubtedly many more species could be added if the time were 
taken to make the survey more complete. 
The system used in classification is largely that of Biitschli, 
although the large number of new species and genera by Ameri- 
can authors makes the interpolation of genera necessary, which 
may sometimes not fit perfectly into the original description. It 
is a very striking fact that of all the species of Protozoa recorded 
in America almost one-half are new; but of those found in 
Sandusky approximately only one-fifth have been described by 
American authors. In arranging the bibliography a special effort 
has been made to collect all those papers which would be of any 
value systematically, and especially those written by American 
workers. No attempt has been made to include papers dealing 
with the morphology or physiology of Protozoa. The European 
