Order: Polykinetids on both left and right oral walls; mouth apical; oral cavity like a large pouch; carnivorous (Illustrated Guide, 1985).
Family: = Order
Genus: = Order
->> Description at WPRNO Google Image Search
Similar genus --> Bursaridium; Condylostoma;
B. truncatella
600 x 468 μm
Yanase river
Fujimi
Saitama, 1999
Movies
B. truncatella
500 x 330 μm
Iruma Park
Saitama, 2002
B. truncatella
conjugation
Nishi-Urawa
Saitama, 2003
B. truncatella
410 x 200 μm
Tanohara Natural p.
Ontake highland
Nagano, 2005
B. ovata
560 x 292 μm
Narita
Chiba, 2000
B. ovata
Cysts, Mac.
Narita
Chiba, 2000
B. ovata
390 x 260 μm
near Oyomi marsh
Hakuba
Nagano, 2004Bursaria sp. ?
Akigase park
Saitama, 1998