 
 
|  Family: Test usually more or less compressed; pseudostome narrowly oval or slit-like. Genus: Test more or less flask-shaped, with more or less neck (Illustrated Guide, 1985). Species: | 
 50 μm
 50 μm
 100 μm
 100 μm
 150 μm; x 400 :
 150 μm; x 400 : 
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
 
 
 
 
Images of collecting locality: 
Oyomi marsh, Hakuba village, Nagano Pref., Japan, May 8, 2006 by Y. Tsukii
 
 
