Cells small, usually united in small packets valve to valve, by means of a system of spines.Frustules linear in girdle view, inflated in the middle and at the ends. Valves linear, inflated in the middle. Vale surface punctate. Raphe absent, pseudoraphe absent or much obscured (Hendey, 1964).
Hendey, 1970: p. 125, Pl. 6: 69; Ricard, 1987: p. 195, Figs. 379-381; Throndsen et al., 2007:p. 180; Witkowski et al., 2000: p. 27, Pl. 11: 12-15.
Frustules in girdle view rectangular with acutely rounded corners slightly incised beneath apices. Valves rhombic-lanceolate with protracted, acutely rounded apices, 15-27 µm long, 7- 10 µm broad; transapical striae composed of puncta, 8-12 in 10 µm, sternum (pseudoraphe), absent (Witkowski et al., 2000).
Cells length 26-32.
This species was rare and has been examined only in girdle view; valve structure was not determined. Cells were similar in morphology and size to C. lorenziana in girdle view.
Marine littoral species, occasionally found in plankton.
Sites of occurrence in RSA:
In Winter 2006 Cruise, this species occurred at few sites (refer sites map), usually in small numbers; maximum abundance (3.5*10^3 cells/l) was associated with the northwestern part of the inner RSA off Saudi Arabia (St. 15). It has been previously reported from Kuwaiti shore (Hendey, 1970).