ClipArt ETC
"A, Euglena viridis, a flagellate Infusorian. I, typical swimming condition; 2, somewhat contracted; 3, spherical resting condition; 4, encysted stage in which fission has taken place. c, cyst; f, flagellum; n, nucleus; o, mouth; p.v., pulsating vacuole; sp, pigment spot. B, Podophrya, a stalked Infusorian bearing tentacles (t). p, Infusorian captured for food; s, stalk." -Galloway, 1915

Euglena Viridis

"A, Euglena viridis, a flagellate Infusorian. I, typical swimming condition; 2, somewhat contracted;…