Drawing

描述：

Notosolenus ostium Larsen and Patterson, 1990. Cells are 18 - 65 microns long and have a small ingestion organelle, which is obliquely oriented and visible on the ventral face of the cell. The cells have a longitudinal dorsal groove and are slightly concave on the ventral face which has a wide groove and four fine stripes. Two flagella emerge from the flagellar canal and are in unequal length. The anterior flagellum is about 1 - 1.5 times the length of the cell and the posterior flagellum is about 0.2 to 0.6 times the length of the cell. The reservoir is near the front in the right side of the cell and the nucleus is to the left.