Description
characters of the family (Fig. 4) . 4. Sphenophrya dosiniae , left side . From Chatton off, 1950. BORDER ANCISTROCOMINA Chatton and Lwoff , 1939 ont ciliated; body typically pear- or a-shaped; thigmotactic cilia more or less oped , at least near anterior end, with apical r; parasites of mantle cavities of molluscs ; amily. MILY ANCISTROCOMIDAE Chatton and Lwoff, 1939 characters of the suborder; 22 genera . b 9 <:? t;? matic kineties cover entire body evenly with one kinety having kinetids spaced at 2 to 3 times as far apart as in other kineties .. .. .. ...... .. .. ... .. .. .. ....... .. .. .... .......... ................. Stegotricha Somatic kineties do not cover entire body evenly ....... .............................. ............. .. .... .. ....2 Cilia cover body, except (perhaps) a longitudinal dorsal stripe and a small posterior part of body .......... .. .. Ancistrocoma iliary distribution more restricted ...... ........ 3 least 2 right marginal kineties much longer those of right thigmotactic subfield ........ 4 Right marginal kineties absent ; kineties of thigmotactic field of about equal length ; if unequal, leftmost may be longer .. .. .. ...... ...... ... 8 all transverse (= vestigal ?) kinety behind leftmost kineties of thigmotactic field .. .......... 5 ot as above .... ...... .... .. .......... .. ............. .. ........... 6 5. Transverse kinety V-shaped , apex of V points anterior; thigmotactic kineties of increased length to left; in marine bivalve molluscs .. ... . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 5' . Transverse kinety not obviously V-shaped ; thigmotactic kineties of == equal length .. .. ... .. .. . . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 6. Thigmotactic field apparently divided as subfields ..........................................................7 6' Thigmotactic field not so subdivided .... .... ... ....... . . . .. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . 7. More than 2 kineties in subfield to left of long right marginal kineties ........... .. ........ Raabe/la 7'. Only 2 shorter kineties in subfield to left of long right marginal kineties ... .. ......... ...... ...... . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 8. Left and right marginal kineties of thigmotactic subfields , longer than others, curving medially and appearing almost continuous behind thigmotactic field ...... .... Colligocineta 8' . Marginal thigmotactic kineties not curving strongly medially ................ ... .. ......... .... .... ...... 9 9. Kineties begin at about same anterior latitude; kineties of left thigmotactic subfield getting longer towards the left; thigmotactic field flat or concave , without medial ridge .... .... ......... .... . . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 9' . Kineties begin increasingly posteriorward to left of thigmotactic field ; median ridge separating left and right thigmotactic subfields; in polychaete annelids ... ...... ... ........ ... lgnotocoma
Type species
Figures
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Raw text
characters of the family (Fig. 4) . 4. Sphenophrya dosiniae , left side . From Chatton off, 1950. BORDER ANCISTROCOMINA Chatton and Lwoff , 1939 ont ciliated; body typically pear- or a-shaped; thigmotactic cilia more or less oped , at least near anterior end, with apical r; parasites of mantle cavities of molluscs ; amily. MILY ANCISTROCOMIDAE Chatton and Lwoff, 1939 characters of the suborder; 22 genera . b 9 <:? t;? matic kineties cover entire body evenly with one kinety having kinetids spaced at 2 to 3 times as far apart as in other kineties .. .. .. ...... .. .. ... .. .. .. ....... .. .. .... .......... ................. Stegotricha Somatic kineties do not cover entire body evenly ....... .............................. ............. .. .... .. ....2 Cilia cover body, except (perhaps) a longitudinal dorsal stripe and a small posterior part of body .......... .. .. Ancistrocoma iliary distribution more restricted ...... ........ 3 least 2 right marginal kineties much longer those of right thigmotactic subfield ........ 4 Right marginal kineties absent ; kineties of thigmotactic field of about equal length ; if unequal, leftmost may be longer .. .. .. ...... ...... ... 8 all transverse (= vestigal ?) kinety behind leftmost kineties of thigmotactic field .. .......... 5 ot as above .... ...... .... .. .......... .. ............. .. ........... 6 5. Transverse kinety V-shaped , apex of V points anterior; thigmotactic kineties of increased length to left; in marine bivalve molluscs .. ... . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 5' . Transverse kinety not obviously V-shaped ; thigmotactic kineties of == equal length .. .. ... .. .. . . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 6. Thigmotactic field apparently divided as subfields ..........................................................7 6' Thigmotactic field not so subdivided .... .... ... ....... . . . .. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . 7. More than 2 kineties in subfield to left of long right marginal kineties ........... .. ........ Raabe/la 7'. Only 2 shorter kineties in subfield to left of long right marginal kineties ... .. ......... ...... ...... . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 8. Left and right marginal kineties of thigmotactic subfields , longer than others, curving medially and appearing almost continuous behind thigmotactic field ...... .... Colligocineta 8' . Marginal thigmotactic kineties not curving strongly medially ................ ... .. ......... .... .... ...... 9 9. Kineties begin at about same anterior latitude; kineties of left thigmotactic subfield getting longer towards the left; thigmotactic field flat or concave , without medial ridge .... .... ......... .... . . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 9' . Kineties begin increasingly posteriorward to left of thigmotactic field ; median ridge separating left and right thigmotactic subfields; in polychaete annelids ... ...... ... ........ ... lgnotocoma