Petz, Song & Wilbert (1995: 29, fig. 9)
In vivo 100–125 × 40–50 µm. Body ellipsoidal; pharyngeal plug indistinct. Somatic kineties 34–39; 1 circumoral kinety composed of dikinetids. Brosse 2-rowed; longer row extends over c. one-third of body length (c. 38 dikinetids); second row distinctly shorter (c. 9 dikinetids); both rows continue posteriorly as somatic kineties. Extrusomes in cytostome nail-shaped, c. 11 µm long, those in body rod-like. Macronucleus ellipsoidal. Contractile vacuole terminal. Movement: moderately fast.
Weddell Sea (Petz et al., 1995).