Fig. 4 in Some Ultrastructural Features of the Planktonic Freshwater Ciliate Limnostrombidium viride (Alveolata, Ciliophora, Oligotrichida) and Improved Diagnoses of Oligotrich Taxa

Fig. 4. Girdle kinety of Limnostrombidium viride (A, scanning electron micrograph; B, scheme of dikinetid). (A) Detail of kinety showing the two alternating types of girdle cilia. (B) Dikinetid with the associated structures; the presence of a transverse ribbon is uncertain. Numbering of the triplets (1–9) follows the "Grain convention", but is somewhat uncertain, as the triplets are difficult to identify. The scheme bases on numerous transmission electron micrographs (not shown). DS, desmose; KD, kinetodesmal fibril; PC, postciliary microtubular ribbon; SC1, club-shaped cilia of left dikinetidal basal bodies (originally anterior ones); SC2, condylocilia of right dikinetidal basal bodies (originally posterior ones). Scale bar: 2 µm.