Genus: Pseudostome lacks lobed collar; test round or oval in cross-section; pseudostome relatively large, 
with or lacking a collar (Illustrated Guide, 1985).  
Species: 80-130 μm long; 60-105 μm diam.; test, like D. acuminata but shorter, broader; short neck constricted at pseudostome, flared as collar; hollow spine at base; yellow to brown; imbedded siliceous particles; pseudostome 45-55 μm (Illustrated Guide, 1985).  | 
Difflugia elegans (similar to Paraeuglypha Filosea), 
test  μm long,  μm wide, 
x 400, x 640, Japan, December 1998 by Y. Tsukii
 50 μm
 100 μm
 150 μm; x 400 : 
 31 μm
 63 μm
 94 μm; x 640