Chromidina chattoni Souidenne, Florent and Grellier n. sp.: morphology. (A, B) General views of tropho-tomonts. (C) Bulb-like head of tropho-tomont. (D, E) Palintomy with first generation of protomites (E) and second generation of protomites (D), arrows: protomites. (F) Bulb-like head of tropho-tomont. Note the presence of large and darkly-stained spots of chromatin associated with the head. (G) Ciliature consisting of 13 kineties (zoom of Fig. 2F). (H–I) Small forms of tropho-tomonts. Images were obtained from smears stained with haematoxylin. (A–I) Hapantotype and parahapantotypes.