Euglena proxima Dangeard 1902, p. 154 

 PL 85, Fig. 25 



Cells metabolic, tusiform, narrowed posteriorly to a blunt tip; 

 periplast spirally striated; chloroplasts numerous, irregularly shaped 

 discs; paramylon bodies numerous small rods scattered throughout 

 the cell; cells 14.5-19- ( 21 )/. in diameter, (50)-70-85-(95);ui long. 

 Among desmids in pools and in the tychoplankton of lakes. Mich., 

 Wis. 



Euglena sanguinea Ehrenberg 1838, p. 105 

 PI. 86, Figs. 1, 2 



Cells metabolic, ovoid-pyriform to subcylindric, tapering poster- 

 iorly to a short, blunt tail-piece; periplast spirally striated; 

 chloroplasts numerous, irregularly notched bands or short ribbons; 

 paramylon bodies several to many ovoid grains; content of cells 

 somewhat obscured by haematochrome, which is normally present; 

 cells 28-33/A in diameter, 55-120/1, long. 



This species seems never to form the bloom type of growth 

 frequently developed by some other species of the genus, but it 

 often occurs in such numbers as to tinge the water slightly with a 

 blood-red color. This is a different effect from that produced by 

 those species of Euglena which develop haematochrome only when 

 subjected to intense illuminations. The color produced by the latter 

 is a dense brick-red, localized in a film at the surface. 



Uncommon in ponds, ditches, and swamps. Wis. 



Euglena Spirogyra Ehrenberg 1838, p. 110 

 PI. 86, Fig. 15 



Cells somewhat metabolic; elongate-cylindric and twisted, narrow- 

 ed posteriorly and extended into a sharp, bent tail-piece; periplast 

 brownish, spirally striated with alternating rows of large and small 

 shining granules; chloroplasts numerous, disc-like; paramylon bodies 

 2 flattened rings, 1 anterior and 1 posterior to the central nucleus; 

 cells 10-26.6/A in diameter, 80-150/x long. 



Not uncommon in ditches and swamps, but never discolors the 

 water or forms surface films. Mich., Wis. 



Euglena tripteris ( Duj. ) Klebs 1883, p. 306 

 PI. 86, Figs. 4-6 



Cells rigid, elongate-cylindric and twisted, narrowing posteriorly 

 to form a sharp tip; broadly rounded at the anterior end; periplast 

 finely striated; chloroplasts numerous disc-shaped bodies; paramylon 



[394] 



