Petroneis sp. (Figure 40)

Description: Length 41–55 µm, width 23–32 µm, striae 10– 11 in 10 µm, areole 12–14 in 10 µm.

Remarks: This species appeared similar to P. marina (Ralfs) D. G. Mann but with narrower central area which is slightly dilated transversely.

Ecology and distribution: Marine benthic species. Common in Potter Cove.