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
B. truncatella
3 clips
Yanase river
Fujimi
Saitama, 1999
Bursaria sp.
3 clips
Akigase park
Saitama
Saitama, 1998