Description
With characters of the family (Fig . 30) . Left side. (from Dragesco , 1970) CILIOPHORA, LITOST CLASS LITOSTOMATEA Small & Lynn, 1981 Somatic monokinetids with two transverse ribbons , slightly convergent postciliary ribbon, and laterally directed kinetodesmal fibril that does not overlap those of adjacent kineties; one transverse ribbon is tangential to the kinetosome perimeter and extends anteriorly into the somatic ridge to the left of the kinetid while the other transverse ribbon is radial to the kinetosome perimeter and extends transversely into the adjacent somatic ridge ; simple oral kinetids , typically dikinetids , (from which nematodesmata arise; nematodesmata may also arise (from somatic kinetids adjacent to the oral region, so-called "oralized " somatic kinetids ; two subclasses . b 1. 9 <9 e? With tox icysts , typically in the oral region ; oral cilia not in oral cavity , but usually at perimeter of oral area ..... .. ... .. ..... ..... .. Haptoria 1'. No oral toxicysts ; oral cilia of tightly packed rows , sometimes as "polykinetids ," which may line walls of oral cavity or vestibulum ... ........ . ......... ... .. ..... .... ... ...... .... .. .. ..... ... Tricho SUBCLASS HAPTORIA Corliss , 1974 Somatic kinetid as for the class , but postciliary microtubules overlap longitudinally; poorly developed alveoli ; tela corticalis often present; toxicysts typically between transverse microtubules of oral dikinetids ; with rhabdos; clavate cilia may be present in one or more clavate kineties on dorsal surface ; three orders . b 9 <9 e? 1. With girdle(s) of somatic cilia composed of at least two kinds of kinetidal elements ...... ... .. ... .. . ... ....... ...... ... ...... .... ...... ..... ..... ...... Cyclo 1'. Somatic cilia , if restricted to a girdle, simple monokinetids ...... .................. ... ..... .... .... ... ... 2. Circumo ral kinetids surrounding cytostome ..... ..... ....... ........ ... .. ..... .... ...... ........... 2'. Oral kinetids as left and right components extending at least along the ventral edge of a laterally flattened body .. ...... Pleurostomatida
Type species
Figures
Raw text
With characters of the family (Fig . 30) . Left side. (from Dragesco , 1970) CILIOPHORA, LITOST CLASS LITOSTOMATEA Small & Lynn, 1981 Somatic monokinetids with two transverse ribbons , slightly convergent postciliary ribbon, and laterally directed kinetodesmal fibril that does not overlap those of adjacent kineties; one transverse ribbon is tangential to the kinetosome perimeter and extends anteriorly into the somatic ridge to the left of the kinetid while the other transverse ribbon is radial to the kinetosome perimeter and extends transversely into the adjacent somatic ridge ; simple oral kinetids , typically dikinetids , (from which nematodesmata arise; nematodesmata may also arise (from somatic kinetids adjacent to the oral region, so-called "oralized " somatic kinetids ; two subclasses . b 1. 9 <9 e? With tox icysts , typically in the oral region ; oral cilia not in oral cavity , but usually at perimeter of oral area ..... .. ... .. ..... ..... .. Haptoria 1'. No oral toxicysts ; oral cilia of tightly packed rows , sometimes as "polykinetids ," which may line walls of oral cavity or vestibulum ... ........ . ......... ... .. ..... .... ... ...... .... .. .. ..... ... Tricho SUBCLASS HAPTORIA Corliss , 1974 Somatic kinetid as for the class , but postciliary microtubules overlap longitudinally; poorly developed alveoli ; tela corticalis often present; toxicysts typically between transverse microtubules of oral dikinetids ; with rhabdos; clavate cilia may be present in one or more clavate kineties on dorsal surface ; three orders . b 9 <9 e? 1. With girdle(s) of somatic cilia composed of at least two kinds of kinetidal elements ...... ... .. ... .. . ... ....... ...... ... ...... .... ...... ..... ..... ...... Cyclo 1'. Somatic cilia , if restricted to a girdle, simple monokinetids ...... .................. ... ..... .... .... ... ... 2. Circumo ral kinetids surrounding cytostome ..... ..... ....... ........ ... .. ..... .... ...... ........... 2'. Oral kinetids as left and right components extending at least along the ventral edge of a laterally flattened body .. ...... Pleurostomatida