Elongate-elliptical Pseudoplatynematum, 45–60 × 18–25 μm in vivo, dorsoventrally flattened about 2 : 1; four spines, one each at anterior end, posterior end, buccal field, and right posterior of body. Buccal field extending to 25% of body length; single contractile vacuole located at posterior end of cell; membranelle 1 three-rowed, membranelle 2 two rowed, membranelle 3 single-rowed; 17–19 somatic kineties; one postoral kinety; marine habitat. (Fan et l., 2011. Acta Prot. 50: 219-234).