 
 
|  Genus: Pseudostome lacks lobed collar; test round or oval in cross-section; pseudostome relatively large, 
with or lacking a collar (Illustrated Guide, 1985). Species: | 
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
 
 
Images of collecting locality: 
No.4, Yokotashiro, Oze-ga-hara (Oze marsh), Katashina village, Gunma Pref., Japan, August 3, 2008 by Y. Tsukii
 
 
