Family STROBILIDIIDAE Kahl in Doflein 

 and Reichencw, 1929. Six genera, of which 

 three have marine species: Ciliospira, Lohman- 

 niella, and Strobilidium. Typically pelagic, 

 planktonic. See Kahl (1932). 



Order Tintinnida 



Families in this order are differentiated on 

 the basis of the morphology of the lorica. See 

 Kofoid and Campbell (1929), Schwarz (1964). 

 Loeblich and Tappan (1968), and Tappan and 

 Loeblich (1968). Members of this order gen- 

 erally are pelagic, planktonic. Many genera are 

 known only as fossils. 



Family CODONELLIDAE Kent, 1882. At 

 least five marine genera: Codonaria, Codonella, 

 Codonopsis, Rhizodomus, and Tintinnopsis. 



Family CODONELLOPSIDAE Kofoid and 

 Campbell, 1929. Eight genera; at least three 

 with marine species: Codonellopsis, Laa^kman- 

 niella, and Stenosemella. 



Family COXLIELLIDAE Kofoid and Camp- 

 bell, 1929. Eight genera; seven with recent ma- 

 rine representatives: CUmacocylis, CoxUella, 

 Helicostomella, Metacylis, Stylicauda, Favel- 

 loides, and Poroecus. 



Family CYTTAROCYLIDIDAE Kofoid and 

 Campbell, 1929. Only Cyttarocylis. 



Family DICTYOCYSTIDAE Kent, 1881. 

 Three genera with marine species: Dictyocysta, 

 Lummella, and Wangiella. 



Family EPIPLOCYLIDIDAE Kofoid and 

 Campbell, 1929. Three genera with marine rep- 

 resentatives: Epicancella, Epiplocylis, and 

 Epiplocyloides. 



Family PETALOTRICHIDAE Kofoid and 

 Campbell, 1929. Six genera with marine rep- 

 resentatives: Acanthostomella, AscamphelUella, 

 Luxiella, NiemarshaUia, Petalotricha, and Wai- 

 lesia. 



Family PTYCHOCYLIDIDAE Kofoid and 

 Campbell, 1929. Four genera with marine rep- 

 resentatives: Cymatocylis, Favella, Protocymw- 

 tocylis, and Ptychocylis. 



Family RHABDONELLIDAE Kofoid and 

 Campbell, 1929. Four marine genera: Epirhab- 

 donella, P rotor habdonella, Rhabdonella, and 

 Rhabdonellopsis. 



Family TINTINNIDAE Claparede and Lach- 

 mann, 1858. About 23 genera with marine rep- 

 resentatives (listed by Tappan and Loeblich, 

 1968). 



Family TINTINNIDIIDAE Kofoid and 

 Campbell, 1929. Two marine genera: Leprotin- 

 tinnus and Tintinnidium. 



Family UNDELLIDAE Kofoid and Campbell, 

 1929 . Seven genera with marine species: 

 Amplectella, Amplectellopsis, Crmindella, Mi- 

 crundella, Proplectella, Undella, and Undellopsis. 



Family XYSTONELLIDAE Kofoid and 

 Campbell, 1929. Four genera with marine spe- 

 cies: Parafavella, Parundella, Xystonella, and 

 Xystonellopsis. 



Order Hypotrichida 



Family EUPLOTIDAE Ehrenberg, 1838. 

 Eleven genera, each with marine representa- 

 tives: Aspidisca, Certesia, Diophrys, Discoceph- 

 alus, Euplotaspis, Euplotes, Euplotidium, Gas- 

 trocirrhus, Paraeuplotes, Sivedmarkia, and 

 Uronychia. Most are benthic and free-living. 

 See Borror (1963, 1965a, 1968b, and 1972) and 

 Deroux and Tuffrau (1965). 



Family HOLOSTICHIDAE Faure-Fremiet, 

 1961. At least six genera with marine species: 

 Holosticha, Keronopsis, Paraholosticha , Trich- 

 otaxis, Uroleptopsis, and Uroleptus. Free-living. 

 See Borror (1972a). 



Family OXYTRICHIDAE Ehrenberg, 1838. 

 Marine genera include: Ancystropodmm, Gas- 

 trostyla, Histricuhis, Laiirentia, Onychodromus, 

 Oxytricha, Parastylonychia, Stylonychia, Tach- 

 ysoma, and Trachelostyla. Free-living and ben- 

 thic. See Borror (1972a) and Faure-Fremiet 

 (1961b). 



Family PSILOTRICHIDAE Butschli, 1889. 

 Thi'ee genera: Caryotricha, Kiitricha, and 

 Psilotricha, all marine. , Free-living. See Kahl 

 (1932). 



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