Hasle (1965b: 41, pl. 9, figs 11, 12; pl. 15, figs 1–5)
Nitzschia barbieri var. latestriata Perag. (Peragallo, 1921: 66, pl. 3, fig. 21)
Hasle & Medlin (1990c: 181, pl. 24.4, figs 11, 12; pl. 24.7, figs 1–5)
Cells solitary or in short chains with cells attached by valve faces, elliptical to lanceolate in valve view; apical axis 32–90 µm; transapical axis 7–8 µm. Transapical striae straight in the middle of the cell, curved near valve poles, 7–9 in 10 µm. Interstrial membranes with 2 rows of poroid areolae; areolae c. 16 in 10 µm. Fibulae present in the same density as striae. Pseudonodulus absent.
Type locality, Argentine Is., Antarctic Peninsula (Peragallo, 1921; Hasle, 1965b); Antarctic pack-ice, Bellingshausen Sea, BRATEGG (Hasle, 1965b).
This species has rarely been reported since its original description.