FIGURES 40–41 in Cocconeis tsara sp. nov., C. santandrea sp. nov. and allied taxa pertaining to the new section Loculatae

FIGURES 40–41. Cocconeis santandrea sp. nov. SEM (Marquesas). SV in internal view. Narrow sternum, round foramina (40). Each loculate areola has an internal domed center with pores (41, arrow). Long arrow indicates the position of the valve apex. Scale bars = 5 µm (40), 300 nm (41).