English: Colpodella vorax (Kent, 1880) Simpson and Patterson, 1996. Cells subpyriform, widest and rounded posteriorly, pointed anteriorly and slightly curved towards the ventral aspect, about two and a half times as long as broad, surface smooth, flagella slender, vibratile, subequal, exceeding the body in length, oral aperture eceedingly elastic, conspicuous only during the passage of food, endoplasm finely granulate, nucleus spherical, subapical, subcentral, contractile vacuole posteriorly located. Length of body 16 microns Predatory.