Studies on the free-living protozoan fauna of estuaries in the coastal zone of Tamil Nadu, India Author Bindu, L. text Records of the Zoological Survey of India 2021 121 1 61 75 journal article 10.26515/rzsi/v121/i1/2021/141506 2581-8686 13186453 58. Tintinnopsis undella Meunier, 1910 Material examined : Mi-174, 3 ex. , Kaliveli estuary, 22.vi.2013 ; Mi-186, 3 ex. ,Marakkanam estuary, 22.vi.2013 ; Mi-290, 10 ex. , Marakkanam estuary, 20.vii.2014 . Diagnosis : Lorica vase shaped; expanded and widened in the oral region; length 90µm; oral diameter 30µm. Distribution in India : Tamil Nadu , West Bengal .