Euglena deses Ehrenberg 1835, p. 248 

 PL 85, Fig. 20 



Cells highly metabolic, twisting and turning continuously; elon- 

 gate-fusiform or subcylindric, posteriorly tapering rather abruptly to 

 a short, blunt tip; membrane finely striated; chloroplasts numerous, 

 disc-like; paramylon bodies several to many rods of various length; 

 cell 18-20- (24)/. in diameter, 65-1 25- (200)/. long. 



In shallow water of Sphagnum bogs and in organic detritis at 

 margins of pools and ponds; frequently found with other species of 

 Euglena. Mich., Wis. 



Euglena Ehrenbergii Klebs 1883, p. 304 

 PL 86, Fig. 13 



Cells straight but highly metabolic, elongate, band-like, truncately 

 rounded at both poles, not or scarcely tapering, Hattened-elliptic in 

 cross section; paramylon bodies several to many cylindrical or 

 flattened sticks; chloroplasts many small, ovoid discs; flagellum about 

 1/2 the length of the cell; cell 20-26/i in diameter, 250-290/t long. 



In shallow water; swamps. Wis. 



Euglena elastica Prescott 1944, p. 365 

 PL 86, Figs. 10-12 



Cells highly metabolic and constantly changing shape when in 

 motion, mostly spindle-shaped but frequently much swollen in the 

 midregion and abruptly narrowed anteriorly and posteriorly, taper- 

 ing slightly to conically rounded apices, the basal end often swollen 

 and knob-like, never extended into a caudus; periplast smooth, 

 flagellum about % the length of the cell; chloroplasts many, 

 irregularly ovoid bodies; pyrenoids lacking (?); paramylon bodies 

 numerous short rods scattered rather evenly throughout the cell; 

 pigment-spot an irregularly shaped body, laterally placed at the 

 anterior end; cells 9.5-11/a in diameter (when the cell is stretched 

 out), 76-100/x long. 



In a small pool near Plum Creek at Sayner Fish Hatchery, Wis- 

 consin, 



Euglena elongata Schewiakoff 1893, p. 16 

 PL 86, Fig. 3 



Cell slightly metabolic but keeping a firm and constant shape 

 when swimming, elongate fusiform-cylindric, tapering gradually to 

 a blunt point posteriorly; one chloroplast, which is band-like and 

 more or less parallel with the long axis of the cell; paramylon grains 



[392] 



