Family: Apical cytostome eccentric, oral dikinetids along extended flailing anterior end ("proboscis");
toxicysts on ventrum of proboscis.
Genus: Body long, rear usually pointed (Illustrated Guide, 1985).
Elogate; snout or neck-like prolongation (proboscis) conspicuous; contractile vacuoles two or more (Kudo, 1966).
Contractile vacuoles usually lie in a row along the dorsal surface (Carey, 1992).
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
Dileptus, x 400, x 640, Uruguay Nov. 1999, photo by Yuuji Tsukii
