Figure 2. Morphology of Gonostomum kuehnelti from life (a–d) and after staining with protargol (e– g). (a) Ventral view of a representative individual; (b,c) ventral views of other individuals showing different body shapes; (d) dorsal view, showing arrangement of cortical granules circular in crosssection; (e) ventral view to show the frontoventral ciliature, arrowhead denotes the buccal cirrus; (f, g) ventral and dorsal view of the same specimen, showing the infraciliature and macronuclear apparatus, black arrowheads indicate the pretransverse ventral cirri, white arrowheads indicate the transverse cirri, broken lines (f) connect cirri which originated from the same anlage, dashed circles (g) showing macronuclear nodules in two distinct groups, lying slightly left of median. AZM, adoral zone of membranelles; CC, caudal cirri; E, endoral; FC, frontal cirri; FTC, frontoterminal cirri; FVC, frontoventral cirri; I–VI, frontoventral-transverse cirral anlagen; LMR, left marginal row; Ma, macronuclear nodules; P, paroral; PVC, postoral ventral cirri; RMR, right marginal row; 1–3, dorsal kineties. Scale bars: a–c, f, g = 35 μm; d = 10 μm.