Unidentified sp.
 
Genus: 
 
Species: 
 | 
Euglena sp. ?, 
cell body 38 μm long (including tail, about 10 μm), 19 μm wide, 
x 640, rice field, Higashi-sano (near Minami-kamishiro railway station), Hakuba village, Nagano Pref., Japan, October 3, 2004 by Y. Tsukii
 31 μm
 63 μm
 94 μm; x 640
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