Drawing

Description :

Notosolenus papilio Skuja, 1939. Gliding rigid euglenid, cell broadly rhomboid with one mid-ventral groove, sometimes almost butterfly-shaped, dorso-ventrally flattened. The anterior end of cell has a short neck and is slightly flared. Cells are 10 - 16 microns long. The anterior flagellum is about the same length as the cell, the second flagellum arises from the anterior end of the cell and is 0.75 - 1.3 CL. The lateral margins of cell have an undulating profile or are convex or more rarely slightly concave. The posterior end of the cell is slightly pointed. The dorsal side of the cell is convex with 4 ridges and the ventral side of the cell is concave with a shallow wide groove. The ventral groove and the dorsal ridges are often not well developed and so hard to see. The pellicle is quite thick. Frequently, detritus adheres to cells. An oval nucleus is located on the left hand side of cell and the flagellar-pocket on the right hand of cell. The contractile vacuole is situated subapically near the anterior-posterior axis of the cell.