The Protozoa of Sandusky Bay and Vicinity. 451 
Class Infusoria — Continued. 
Cothurnia variabilis Kell.; attached to 
gills of Cambarus from creek near 
Sandusky, never attached to each 
other; from Columbus also. 
Genus Stylocola De From. 
Stylocola ampulla From.; from algae in 
basket factory cove. 
Genus Vaginicola C. & L. 
Vaginicola tincta Ehr.; on roots of duck- 
weed from basket factory cove. 
Vaginicola leptosoma Stokes; on Lemna 
roots from basket factory cove. 
Vaginicola grandis Perty; on willow roots 
irom college lake, Columbus, agrees 
with above except that there are few 
or no green granules. 
Vaginicola inclinata De From.; on Clado- 
phora from college lake (east), Co- 
lumbus, body extruded about 4 its 
length from lorica. 
Vaginicola ingenita (From.) S. K.; on 
Zygnum from basket factory cove. 
Vaginicola gigantea D’Udk.; on wil- 
low roots from college lake, Colum- 
bus, agreeing with above but body 
extruded 4 its length from lorica. 
Vaginicola crystallina Ehr.; on Lemna 
from basket factory cove. 
Vaginicola vestita From.; on roots of 
Polygonum emersum from _ Biemil- 
ler’s cove. 
Genus Platycola S. K. 
Platycola coelochila Stokes; on Lemna 
roots from near basket factory cove. 
Platycola regularis De From.; on dis- 
carded skin of Culex larva. 
