Description
Paroral of many short kineties forming a dense U-shaped field (Fig . 37). ' @) .) . ' \ \ ' B A t side. .. . . . . . . . I > I ~.~t l . ' . ·c··' y, · .•. . : ' ' l I · ·, .· I t t 1 I ' ' I I . ,· .' ., o, ' ' A B . '- side. B. Colpoda cucul/us . Ventral view . SEM. 568 CILIOPHORA, PROSTOMATEA CLASS PROSTOMATEA Schewiakoff, 1896 Somatic monokinetids usual , with radial transverse ribbon, slightly convergent postciliary ribbon, and anteriorly directed kinetodesmal fibril that does not overlap those of other kinetids; somatic kinetids often arranged in paratenes ; cytostome apical to subapical ; oral dikinetids, radial to tangential to perimeter of oral area ; oral dikinetid postciliary ribbons that extend laterally (from each dikinetid, overlapping one another, and , in some species, form ing a circular microtubular band that supports the walls of a shallow precytostomal cavity ; with rhabdos -like cytopharyngeal apparatus ; stomatogenesis ventral with migration of cytostome to apical position following cytokinesis; two orders . b 9 6> t;? 1. Careful examination of oral region shows no kinetidal specializations external or internal to oral dikinetids .... .. .... .. ...... ... Prostomatida 1'. Careful examination shows "brosse" kinetids , usually of two kinetosomes external or internal to oral dikinetids .. .... Prorodontida
Type species
Figures
Raw text
Paroral of many short kineties forming a dense U-shaped field (Fig . 37). ' @) .) . ' \ \ ' B A t side. .. . . . . . . . I > I ~.~t l . ' . ·c··' y, · .•. . : ' ' l I · ·, .· I t t 1 I ' ' I I . ,· .' ., o, ' ' A B . '- side. B. Colpoda cucul/us . Ventral view . SEM. 568 CILIOPHORA, PROSTOMATEA CLASS PROSTOMATEA Schewiakoff, 1896 Somatic monokinetids usual , with radial transverse ribbon, slightly convergent postciliary ribbon, and anteriorly directed kinetodesmal fibril that does not overlap those of other kinetids; somatic kinetids often arranged in paratenes ; cytostome apical to subapical ; oral dikinetids, radial to tangential to perimeter of oral area ; oral dikinetid postciliary ribbons that extend laterally (from each dikinetid, overlapping one another, and , in some species, form ing a circular microtubular band that supports the walls of a shallow precytostomal cavity ; with rhabdos -like cytopharyngeal apparatus ; stomatogenesis ventral with migration of cytostome to apical position following cytokinesis; two orders . b 9 6> t;? 1. Careful examination of oral region shows no kinetidal specializations external or internal to oral dikinetids .... .. .... .. ...... ... Prostomatida 1'. Careful examination shows "brosse" kinetids , usually of two kinetosomes external or internal to oral dikinetids .. .... Prorodontida