1. _Trichonympha agilis_, Leidy, from gut of White Ant (Termite).
2. _Opalina ranarum_, Purkinje parasitic in frog rectum multinucleate
adult.
3, 4. Binary fissions of same, 1-nucleat individual at final stage of
fission.
Encyclopaedia Britannica, 11th Edition, "Finland" to "Fleury, Andre" Volume 10, Slice 4 · 第 44 / 53 题