FIGURES 481–510 in Taxonomy, ecology and analysis of type material of some small Encyonopsis with description of new species in Ireland

FIGURES 481–510. Encyonopsis neerlandica Van de Vijver, Verweij, Van der Wal & Mertens. Figs 481–501. LM. Figs 481–501. Valves showing morphological range and size reduction series in populations from Irish lakes. Figs 502–510. SEM. Figs 502 & 504–506. External view showing variation in size and shape of apices. Figs 507–510. Internal view. Figs 507–509. Variation in valve outline and shape of apices. Fig. 510. Detail of valve apex and helictoglossa. Scale bar in Fig. 490 = 10 μm for LM figures 481–490. Scale bar in Fig. 501 = 10 μm for LM figures 491–501. Scale bar in all SEM micrographs = 1 μm.