Drawing

Description:

Distephanus speculum (Ehrenberg, 1837) Haeckel, 1899. Silicoflagellate about 18 microns with siliceous skeleton with six major sides, from the corners of which projects spines. Bars also arise inwards and may fuse to form an apical ring. The cytoplasm extends over the skeleton, fine pseudopodia usually project from the tops of the spines. Many small plastids, single emergent flagellum. Marine.