The Protozoa of Sandusky Bay and Vicinity. 443 
Class Infusoria — Continued. 
Genus Spirostomum Ehr. 
Spirostomum ambiguum Ehr.; in floating 
decayed vegetation from Biemiller’s 
cove. 
Family Stentoridae 
Genus Stentor Oken 
Stentor igneus Ehr.; on algae (Clado- 
phora) from basket factory cove near 
ice house, one specimen. 
Stentor caeruleus Ehr.; in vegetation of 
basket factory cove. 
Stentor roeselii Ehr.; on algae from col- 
lege lake (east), Columbus. 
Stentor polymorphus Miull.; among duck- 
weed roots from basket factory cove. 
Genus Chaetospira Lachmann 
Chaetospira mtelleri Lach.; on willow 
roots. 
Suborder Oligotrichina 
Family Halteriidae 
Genus Strombidium C. & L. 
Strombidium claperedi S. K.; among algae 
from basket factory cove, occasional. 
Genus Arachnidium S. K. 
Arachnidium globosum S. K.; on duck- 
weed from basket factory cove. 
Family Tintinnidae 
Genus Calceolus Diesing 
Calceolus cypripedium (J. Clk.) S. K.; in 
fish tank in Laboratory building, San- 
dusky. 
Order Hypotrichida 
Family Oxytrichidae 
Genus Urostyla Ehr. 
Urostyla grandis Ehr.; seen on Hydra 
fusca first, but afterwards in water. 
