434 The Protozoa of Sandusky Bay and Vicinity. 
Class Mastigophora — Continued. 
Colacium steinii S. K.; boat landing, Ce- 
dar Point. 
Colacium arbuscula St.; on Rotifer (col- 
ony bearing unidentified on algae 
parasite), from Biemillers cove. 
Colacium calvum Stein; on algae and 
duckweed roots from  Biemillers 
cove, common. 
Genus Trachelomonas Ehr. 
Trachelomonas piscatoris (Fisher) 
Stokes; in towings from Biemillers 
cove and on decaying vegetation. 
Trachelomonas hispida (Perty) Stein; 
on vegetation of basket factory cove; 
also another form similar to the above 
but with spines on the ends and 
smooth in the middle. 
Trachelomonas armata (Ehr.) Stein; on 
vegetation of basket factory cove; a 
form with many short spines on pos- 
terior end. 
Trachelomonas cylindrica Ehr.; in decay- 
ing vegetation from Biemiller’s cove. 
Trachelomonas volvocina Ehr; in decay- 
ing vegetation from Biemiller’s cove. 
Genus Phacus Nitzsch. 
Phacus pleuronectes (O. F. Mill.) Duj.; 
in vegetation of basket factory cove; 
chlorophyll arranged in rectangular 
masses on ventral border. 
Phacus triqueter Ehr.; on vegetation of 
basket factory cove. 
Phacus pyrum (Ehr.) S. K.; on vegeta- 
tion of basket factory cove. 
Phacus longicaudus (Ehr.) Stein; on 
vegetation of basket factory cove; 
