SOME PROTOZOA PROM FAYETTE, IOWA. 
BY GUY WEST WILSON. 
During the past autumn several cultures were made from ponds, springs and 
streams in the vicinity of Fayette for the purpose of providing material for 
class use. As the number of species of Protozoa represented appeared to be 
much greater than the author had observed elsewhere, a record of their 
identity and abundance was kept. A partial result of this work is the present 
list of thirty-three species, in addition to which several others were observed, 
but not identified. Inasmuch as Dr. Edmundson’s “Protozoa of Iowa” formed 
the basis of the taxonomic portion of the work, the Euglenidae are included in 
the list, although the author is by no means convinced of their animal nature, 
RHIZOPODA. 
Family Amoebidae. 
1. Amoeba proteus Leidy. 
Pound abundantly and of large size in several cultures from ponds, especially 
those which contained an abundance of semi-decaying vegetation. 
2. Amoeba radios a Ehr. 
A very few specimens were found in company with the preceding species. 
3. Amoeba villosa Wallich. 
A few specimens were observed in cultures of pond water. 
Family Arcellidae. 
4. Diffulgia pyriformis Perty. 
Common in cultures containing Algae and Naias. A careful search failed 
to reveal the presence of other species. 
5. Arcella vulgaris Ehr. 
Not uncommon in ponds and streams, often in company with diatoms. 
HELIOZOA. 
Order Aphrothoracidae. 
6. Actinophrys sol Ehr. 
In ponds and springs, rather rare, and usually in company with Diffulgia. 
PLAGEDLIDA. 
Family Heteromonadidae. 
7. Antophysa vegetans Muhl. 
This interesting collonial form appeared in great abundance in cultures in 
which NympTiaea advena and Naias occur. 
16 a69; 
