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Description of Tintinnus lususundaeTintinnid ciliate, lorica diameter of this species varies within rather narrow limits, while the length varies considerably. The shape is also variable. The lorica has the form of an open tube, wider at the oral than at the aboral end, but the amount of oral flare varies; there is sometimes a marked brim at the oral edge; the aboral end is usually straight, but there is sometimes a slight flare. Wide form has a length of 175-300 microns, diameter at mouth 50-60 microns (usually 52-54 microns), diameter at foot 30-35 microns (usually 30-33 microns). Slender form - length 155-280 microns, diameter at mouth 34-46 microns (usually 43-45 microns), diameter at foot 24-29 microns (usually 24-27 microns), diameter across middle of body 29-33 microns (usually 30-32 microns). There are intermediate forms.