THE ALGAE 
Family Volvocaceae. 
Gonium pectorale, Mueller. 
Pandorina morum, Borg. 
Eudorina elegans, Ehr. 
Volvox globator, L. 
Volvox aureus, Ehr.* In pools at Lorne Park. 
Order Protococcales. 
Family Protococcaceae. 
Characium naegelii, A. Br. 
Family Scenedesmaceae. 
Zoochlorella parasitica, Brandt.* The cause of the 
green color of fresh-water sponges. 
Howard Lake and elsewhere. 
Rhaphidium faleatum, Cooke. Often so abundant 
in aquarium jars as to color the water 
dark green. 
Tetraedron gigas, Wittr. 
Scenedesmus obliquus, Kutz. 
i bijuga, Wittr.* 
quadricauda, Bréb. 
Family Hydrodictyaceae. 
Hydrodictyon reticulatum, Lager.* In a stream 
running from Don Brick Works. 
Abundant in creek at Acton West, 
northwest of railroad station. 
Pediastrum boryanum, Menegh. 
tetras, Ehrb. 
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