Figs 1A–L in Two Oxytrichids from the Ancient Lake Biwa, Japan, with Notes on Morphogenesis of Notohymena australis (Ciliophora, Sporadotrichida)

Figs 1A–L. Apoamphisiella tihanyiensis from life (A–D) and after protargol impregnation (E–L). A – ventral view of a representative individual; B – arrangement of cortical granules on ventral side; C – shape of contractile vacuole; D – arrangement of cortical granules on dorsal side; E – posterior part of cell in ventral view, showing 2 pretransverse ventral cirri (arrowheads) and two additional ventral cirri ahead of transverse cirri (arrows); F – posterior part of cell in ventral view, showing 2 pretransverse ventral cirri (encircled by broken line) and caudal cirri (arrows); G, H – ventral (G) and dorsal (H) infraciliature of the same specimen, showing single postoral ventral cirrus (arrow in G), caudal cirri at the posterior end of dorsal kinety 4 (arrow in H), and frontal cirri (arrowheads in G); I – anterior half of cell in ventral view, showing single postoral ventral cirrus (arrow) and several parental ventral cirri (arrowhead); J – part of ventral infraciliature, showing micronuclei (arrows), frontoventral cirri (arrowheads), 2 postoral ventral cirri (double-arrowhead), and several parental ventral cirri (connected by broken line); K, L – ventral (K) and dorsal (L) infraciliature of the same specimen, showing caudal cirri (arrows in K), macronuclear nodules (arrows in L), frontal cirri (arrowheads in K), and micronuclei (arrowheads in L). 1–6 – dorsal kinety 1–6, AZM, adoral zone of membranelles; BC – buccal cirrus, CR – cirral row, DB – dorsal bristle, E – endoral membrane, FVC – frontoventral cirri, FVR – frontoventral row, LMR – left marginal row, Ma – macronuclear nodule, P – paroral membrane, RMR – right marginal row, TC – transverse cirri. Scale bars: 80 μm (A), 40 μm (I, G, H, J–L), 20 μm (E, F).