Description
Paroral dikinetid ciliated along entire length , not covered by pellicular structures ; three oral polykinetids , each of - equal number of row s of kinetosomes ; some species with polymorphic life cycles (see Fig . 1 above); three genera. b 9 t;? 1. Oral polykinetids straight, never sigmoid ... .. ... . ................. ........... ..... .. ... ... ........... Tetrahymena 1'. Some oral polykinetids sigmoid .... ...................... 2 2. Oral polykinetid 2, sigmoid ; anterior end of polykinetid 1 curving right ........ Lambornella 2'. Oral polykinetids 1 and 2 sigmoid. Deltopylum 610 CILIOPHORA, HYMENOSTOMATIA Fi g. 4. A. Curimostoma rena/is. B. Apica l detail. (fr Kozloff , 1954) ..... ·/ ::· ~..·: :' Fi g. 5. Spirozona ca udata. A. Ventral right. B. Dors (from Foi ssner et al. , 1981) . .. .... . . . ·. . .. · .... .. . . ... . A B B. Dorsal surface. (from Foissner, 1986)
Type species
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Paroral dikinetid ciliated along entire length , not covered by pellicular structures ; three oral polykinetids , each of - equal number of row s of kinetosomes ; some species with polymorphic life cycles (see Fig . 1 above); three genera. b 9 t;? 1. Oral polykinetids straight, never sigmoid ... .. ... . ................. ........... ..... .. ... ... ........... Tetrahymena 1'. Some oral polykinetids sigmoid .... ...................... 2 2. Oral polykinetid 2, sigmoid ; anterior end of polykinetid 1 curving right ........ Lambornella 2'. Oral polykinetids 1 and 2 sigmoid. Deltopylum 610 CILIOPHORA, HYMENOSTOMATIA Fi g. 4. A. Curimostoma rena/is. B. Apica l detail. (fr Kozloff , 1954) ..... ·/ ::· ~..·: :' Fi g. 5. Spirozona ca udata. A. Ventral right. B. Dors (from Foi ssner et al. , 1981) . .. .... . . . ·. . .. · .... .. . . ... . A B B. Dorsal surface. (from Foissner, 1986)