Abstract: 1. Euglena allorgii var. capitata Shi, var. nov. (Fig. 1; a—e)Deffert a typo cellulis minoribus, 33—57μm longis, 5—10μm latis, antice conspicue con strictis et capitatis.Hab,in stagno juxta Zhicheng et Chengguan in Yidu Xian, Hubei, 23.5—26℃, pH6—6.5, Jun. 3—4, 1981.Types in HP7269, 7268, 7280, et 7281.2. Euglena oxyuris f. longitudinalistria Shi, f. nov. (Fig. 1: f)Differt a typo cellulis longitudinaliter striatis, 140—150μm longis, 15—18μm latis.Hab. in stagno magao prope Yuquansi in Dangyang Xian, Hubei, 27℃, pH6.5, Jun. 15, 1981.Typus in HP7134.3. Euglena vagans var. fusiformis Shi, var. nov. (Fig. 1: g, h)Differt a typo cellulis minoribus, anguste fusiformibus, 25—28μm longis, 7—8μm Iatis; apice aspectu frontali late et oblique truncto, aspectu laterali angusto et acute angulato.Hab.in fossa juxta angrum inundatum prope Zhicheng in Yidu Xian, Hubei, 26℃, pH6. dun. 3, 1981.Typus in HP7263.4. Phacus acuminatus var. triqueter Shi, var. nov. (Fig. 1: ⅰ—k)Differt a typo cellulis triangulatis, postice minute arguteque caudatis (circiter 4.5—5μm longa), aspectu verticali triquetris, latere dorsali carinatis, latere ventrali planiusculis, 30—32μm longis, 21—23μm latis, circa 10μm crassis.Hab. in palude juxta Nanyang rivulum in Xingshan Xian, Hubei, 26.5℃, pH6.5, Jun. 12, 1981.Typus in HP7126.5. Phacus neosulcatus Shi, sp. nov. (Fig. 1: 1, m)Cellulis ovatis, 23—24μm longis, 12—13μm latis, circa 10μm crassis, antice anguste rotundatis, postice late rotundatis et papillatim caudatis; latere dosali convexis, latere ventrali fete planiusculis cum sulco lato sigmoideo parallelus ad strias spiralis; periplasto spiraliter striatis, striis dextrogyris; chromatophoris multis disciformibus; grano paramyli 1 magno disciformi.Hab.in stagno juxta Zhicheng in Yidu Xian. Hubei, 22.5℃, pH6.5, Jun. 3, 1981.Typus in HP7265.6. Phacus raciborskii var. triqueter Shi, vat. nov. (Fig. 1: n—p)Differt a typo cellulis 20—35μm longis, 8—18μm latis 6—12μm crassis, aspectu verticali triquetris, latere dorsali conspicue carinatis, latere ventrali fere planiusculis.Hub. in stagno ad Yichang Shi et Yidu Xian et Dangyang Xian, Hubei, 23—26.5℃, pH6.5—7, Maius 22 et Jun. 4—15, 1981.Typus in HP7207, 7278 et 7133.7. Phacus triangularis Shi, sp. nov. (Fig. 2: a—c)Cellulis late ovatis, 28—32μm longis, 20—23μm latis, 14—15μm crassis, antice anguste rotundatis et in medio retusis, postice late rotundatis et spina caudata conica et paulo curvata praedita, 4—5μm longa; aspectu laterali oblongis et crassioribus; aspectu verticali triquetris; latter dosali crasse carinatis, latere ventrali planiusculis; periplasto longitudinaliter striato; chromatophoris multis disciformibis; granis paramylorum duobus, alio majore disciformi, alio minore globoso; nucleo centrali.Hab. in stagno ad Yuquansi in Dangyang Xian. Hubei, 26℃, pH6.5, Jun. 15, 1981.Typus in HP7136.8. Phaeus triqueter var. oblongus Shi, var. nov. (Fig. 2: d, e)Differt a typo cellulis conspicue oblongis, 637—67μm longis, 37—40μm latis, circa 17μm crassis.Hab. in stagno ad Yuquansi in Dangyang Xian, Hubei, 26℃, pH6.5, Jun. 15, 1981.Typus in HP7136.9. Trachelomonas abrupta var. coronata Shi, vat. nov. (Fig. 2: f)Differt a typo loricis unaquaeque collo rectim vel ampliatim productis; margine collo integero vel dontato; loricis 30—33μm longis, circa 23μm latis.Hab. in stagno ad Zhichang in Yidu Xian, Hubei, 25℃. pH6, Jun. 3, 1981.Typus in HP7272.10. Trachelomonas felix var. oblonga Shi, var. nov. (Fig. 2. g)Differt a typo loricis oblongis, antice paulo angustis, poro flagelli cum annulo crasso; 18—19μm longis, 13—14μm latis.Hab.in fossa juxta ageron ad Zhicheng in Yidu Xian, Hubei, 20℃, pH6, Jun. 3, 1981.Typus in HP7263.11. Trachelomonas stokesi f. laevis Shi, f. nov. (Fig. 2: h)Differt a typo loricis paulo minoribus, superfice loricae laevi, 13—14μm longis, 10—11μm latis.Hub. in stagno in Yichang Shi, Hubei, 26℃, pH6.5, Maius 22, 1981.Typus in HP7207.12. Strombomonas schauinslandii f. crenulatacollis f. nov. (Fig. 2: ⅰ)Differt a typo loricis 33—35μm longis, 20—23μm latis; collo morgine oblique truncto, distincte ampliato et crenulato. Hab. in stagno juxta ghicheng in Yidu Xian, Hubei 22.5℃, pH6.5, Jun. 3, 1981.Typus in HP7265.13. Astasia mutata Shi, sp. nov. (Fig. 3: a—d)Cellulis metabolicis, ovatis vel late ellipsoideis vel interdum subcylindricis, antice conspicue compressis, postice rotundatis, 15—19μm longis, 10—13μm latis, flagello cellulam longitudine circiter aequilonge vel paulo longiore; periplasto obscure striato; granis paramylorum multis parvis ovalibus vel bacullaribus, dispersis vel in parte postica constipatis; nucleo centrali.Hab. in stagno in Yida Xian, Hubei 26℃, pH6.5, Jun. 4, 1981.Typus in HP7282.14. Rhabdomonas fabiformis Shi, sp. nov. (Fig. 3: e—g)Cellulis aliquanto dorsoventralibus, 23—24μm longis, 12—13μm latis, aspectu facei cylindricis, extremitibus rotundatis, aspectu laterali fabiformibus vel reniformibus, latere ventrali planiusculis vel paulo concavis, latere dorsali conspicue arcuatis; cytostornate leviterrecurvato excentrice sito; aspectu verticali rotundatis; flagello cellulam longitudine circiter aequilongo vel paulo breviore; periplasto cure circa 8 fossulis dextrogyris; granis paramylorum multis glo bosis vel ovalibus vel bacillaribus, variis in magnitudinem; nucleo centrali.Hab. in stagno juxta Nanyang rivulum in Xingshan Xian, Hubei, 30℃, pHT, Jun. 12, 1981.ypus in HP7126.15. Notosolenus bicostatus Shi, sp. nov. (Fig. 3: h—k)Cellulis baud metabolicis, conspicue dorsoventraliter cornplanatis, 13—18μm longis, 7.5—10μn latis, 5—7.5μm crassis, aspectu facei hexagonis extremitibus angulatis, antice angustis, postice latis, latoribus fete planiusculis, latere dorsali leviter convexis carinis 2 longitudinalibus praedito, latere ventrali paulo concavis; periplasto firmo haud striato; flagellis 2 inequalis in pharynge, flagello natanti cellulam longitudine fete 1.5—2-plo longiore, flagello trahenti cellulam paulo breviore; nucleo postica et aliquanto laterali.Hab.in stagno in Yichang Shi, Hubei, 26℃, pH6.5, Maius 22, 1981.Typus in HP7207.