FIGURE 2 in Morphology and infraciliature of the oligotrich ciliate Strombidium rapulum (Yagiu, 1933) Kahl, 1934 (Protozoa, Ciliophora, Oligotrichida) from the intestine of sea urchin Hemicentrotus pulcherrimus Agassiz

FIGURE 2. Microphotographs of Strombidium rapulum from live cells (A–D, F), after Methylgreen Pyronine staining and protargol impregnation (G–K). (A) A typical individual, arrowheads indicate light­reflecting granules in the cytoplasm while arrow marks the tail. (B) A slightly pressed specimens, to show light­reflecting granules in the cytoplasm (arrowheads). (C) Dorsal view, to show the protrusion between anterior membranelles (arrowheads). (D) To show details of the tail (arrow). (E) Ventral view, arrowhead marks the macronucleus. (F) Apical view, to show the apical protrusion (arrow). (G) Ventral view, to show the buccal apparatus. (H) Details of the anterior membranelles, arrowheads demonstrate the argentophilic fibres. (I) Ventral view, arrowheads indicate the girdle kinety, which is composed of monokinetids. (J) To show the ventral kinety (arrowheads). (K) Lateral view, to show the macronucleus. Scale bars = 60 µm.Published as part of Xu, Dapeng, Song, Weibo, Sun, Ping & Chen, Xiangrui, 2006, Morphology and infraciliature of the oligotrich ciliate Strombidium rapulum (Yagiu, 1933) Kahl, 1934 (Protozoa, Ciliophora, Oligotrichida) from the intestine of sea urchin Hemicentrotus pulcherrimus Agassiz, pp. 33-40 in Zootaxa 1113 on page 36, DOI: 10.5281/zenodo.17155