curving transversely at the periphery of the cell, one on either side; 

 chloroplasts numerous, oval discs; cells 14-16/x in diameter, 20-22/* 

 long, smaller than the typical form. 



In a tow sample from a cedar swamp. Wis. 



Lepocinclis ovum (Ehrenb.) Lemmermann 1901, p. 88 



PI. 89, Figs. 5, 6 



Cells broadly ovate, with a short, blunt caudus, rounded both 

 anteriorly and posteriorly; periplast spirally striated to the right; 

 flagellum about as long as the body; paramylon in the form of 2 

 rings, 1 on either side of the cell; cells 22-25/* in diameter, 28-30/* 

 long. 



Common in ditches, swamps and small ponds; also found in the 

 shallow water of bays and lagoons among dense growths of algae; 

 rarely euplanktonic. Mich., Wis. 



Lepocinclis Playfairiana Deflandre 1932, p. 227 

 PI. 89, Fig. 16 



Cells broadly oval with a short caudus, sHghtiy narrowed and 

 sharply rounded anteriorly, the gullet and flagellum attachment 

 lateral to the apex, where there is a sHght invagination on the right 

 side; periplast smooth; paramylon bodies 2 large circular or oval 

 rings; cells 28-30/* in diameter, 46-48/* long. 



In tows from swamps and ponds. Wis. 



Lepocinclis sphagnophila Lemmermann 1904, p. 124 

 PI. 89, Figs. 11-13 



Cells fusiform or ovoid, narrowed posteriorly into a short caudus, 

 tapering anteriorly and forming a bluntly rounded apex which is 

 bipapillate (in our specimens); paramylon bodies 4 plates, 2 on 

 either side; chloroplasts relatively few ovoid discs; flagellum length 

 ( ?) ; cells 8-10/* in diameter, 22-25/* long. 



Our specimens are assigned here because of their general agree- 

 ment with Lemmermann's description. Conrad (1934) reports this 

 as a doubtful or little knowm species. 



Not infrequent in soft and acid water habitats. Wis. 



TRACHELOMONAS Ehrenberg 1835, p. 315 



In this genus euglenoid cells are enclosed in a firm gelatinous 

 shell which has an opening for the flagellum. The shell or test has 

 an almost endless variety of shapes and forms of decoration, and 

 since these features are specific the taxonomy of the genus is based 



[407 J 



