Cocconeis matsii (Al-Handal, Riaux-Gobin et Wulff) Riaux-Gobin, Compère, Romero et Williams (Figure 53)

Literature: (Al-Handal et al. 2010, p. 6, figs. 13–18, 25–34 as C. pinnata var. matsii).

Description: Length 10–13 µm, width 5–7 µm, striae (rapheless valve) 7–8 in 10 µm.

Remarks: This species was originally described from Potter Cove as C. pinnata var matsii but was considered a distinct species based on stria and areola density and structure (Riaux-Gobin et al. 2003). These authors, however, did not provide images for specimens but rather established a new combination.

Ecology and distribution: The species has not been reported outside its type locality in Potter Cove. Frequent in the material examined.