Genus:
Test small ovoid in shape with siliceous scales in alternating transverse rows; pseudostome terminal;
cell body does not fill the test completely; nucleus posterior (Kudo, 1966).
Species:
Paulinella chromatophora Lauterborn,
test 34 μm long, 24 μm wide, L/W=1.4,
pseudostome 6 μm wide, colar present (about 1.5 μm high),
x 640, Hasu-ike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 19, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640