296 College of Forestry 
PHYLUM NEMATHELMINTHES. 
Crass NEMATODA. 
This class of worms (represented by the common Round- 
worm or Hair-worm, Gordius aquaticus) are common as 
parasites, but are also well-known in fresh water as free 
worms. Such were observed in the intestine of the Chain 
Pickerel (No. 54 [1]) and the Common Seulpin (No. 
23[2]). 
PHYLUM MOLLUSCOIDEA. 
Crass Ponyzoa. 
To this class belong the animals known as moss animals or 
bryozoans. ‘They are mostly marine organisms, but a few 
genera (about seven) live in fresh-water streams and ponds. 
These belong to the order Phylactolemata. None of the 
animals were observed but the ‘“ winter eggs” or statoblasts 
of Plumatella were common in the stomach of snails 
(Lymnea stagnalis lilliane) and in the stomachs of the Com- 
mon Sucker, Brook Silversides, Rock Bass, and Pumpkin- 
seed. These statoblasts are well figured by Whipple (1899, 
plate 18, fig. 6) and Stokes (1896, p. 253, fig. 174). A 
good account of the North American fresh-water group is 
given by Davenport (1904). 
IPBEYSL AME AGNUN GEL AA 
Crass Hrirupinra. 
A number of leeches were collected and have been identi- 
fied by Professor J. Perey Moore. Ten species were 
obtained, being nearly half of the number recorded from 
Minnesota (22, Moore, 1912), and nearly as many as 
recorded from I]linois (11, Moore, 1901). Fifteen species 
are recorded from the Great Lakes Region (Moore, 1906). 
The leeches are abundant in Oneida Lake, and special atten- 
tion given to this group of animals would doubtless add sev- 
eral species to the list herein presented. The leeches are 
