284 



SUB-CLASS: PHYTOMASTIGINA 



In addition to the forms just considered, which are coprozoic in habit, 

 certain Eiiglenoidida are definitely parasitic. 



Tadpoles appear to be commonly infected with certain chlorophyll- 

 bearing flagellates allied to the free-living Euglena. Alexeieff (1912/") 



Fig. 134. — Euglenoid Flagellates from the Intestine of Tadpoles of Bana 

 pipiens and Other Species. (After Hegner, 1923.) 



1-3. Euglenamorpha hegner i (x 1,600): (1) Living specimen showing three flagella, reservoir, 

 stigma, chromatoi^hores, and nucleus; (2) specimen fixed in Schaudinn's fluid and stained 

 with iron hsematoxylin ; (3) specimen stained with iodine. 

 4. Livmg specimen of Phacus ( x 1,600). 5. Euglena spirogyra ? ( X 780). 



noted them in large numbers in the rectum, and states that Brumpt had 

 made a similar observation. He placed the organism in the genus Euglena 

 without giving it a specific name. He also observed a species of Phacus 

 in the same host. He regarded the flagellates as accidentally present in 



