446 
The Protozoa of Sandusky Bay and Vicinity. 
Class Infusoria — Continued. 
Genus Vorticella Linn. 
Vorticella hamata Ehr.; on duckweed 
roots from Biemiller’s cove. Agree- 
ing with the above except that it is 
shorter and thicker. — 
Vorticella nebulifera Ehr.; on roots of 
duckweed from basket factory cove. 
Vorticella microstoma Ehr.; on algae from 
college lake, Columbus. 
Vorticella campanula Ehr.; in vegetation 
of basket factory cove. 
Vorticella citrina Ehr.; in vegetation from 
basket factory cove. 
Vorticella nutans Mull.; on roots of Lem- 
na from basket factory cove. 
Vorticella lockwoodii Stokes; on willow 
roots from college lake, Columbus. 
Vorticella alba From.; found attached to 
bristles of Gammarus. 
Vorticella rhabdostyloides Kell.; on Cy- 
clops agreeing in every detail obtain- 
able; also on worm. 
Vorticella conosoma Stokes; attached to 
Conochilus volvox. 
Vorticella aquae dulcis Stokes ; attached to 
various crustaceans, faintly striated. 
Vorticella chlorostigma Ehr.; on duck- 
weed roots, variable in shape, ciliary 
disc depressed, transverse striations 
quite fine. 
Vorticella fasciculata Mull.; on Lemna. 
Vorticella vestita Stokes; on willow roots 
from cove near basket factory, com- 
mon. 
Vorticella parasita Stokes; attached to 
dragon fly larvae. 
