PLATE 4, FIGURES 19–25. G. pseudosubtiloides. SEM. Figs 20–22, external views. Fig. 20 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China

PLATE 4, FIGURES 19–25. G. pseudosubtiloides. SEM. Figs 20–22, external views. Fig. 20. Headpole, showing striae convergent near the apex and distal raphe end extending onto mantle. Fig. 21. Central area with proximal raphe ends dilated and radiate striae around the center terminating in single rows of areolae. Fig. 22. Bilobed apical pore field has porelli aligned in two rows, and they resemble the areolae. Distal raphe end bisects the pore field. Figs 19, 23–25, internal views. Fig 19. Entire valve view show prominent axial area and expanded central area. Fig. 23. Headople with pseudoseptum and helictoglossa evident. Fig. 24. Central area with raised central nodule, recurved proximal raphe ends and striae terminating as single rows of areolae. Fig. 25. Footpole with prominent helictoglossa and distinct divisions between rows of porelli of the apical pore field.