Ptychocylis urnula (Claparède & Lachmann 1858)

The type species of the genus Ptychocylis is P. urnula described originally by Claparède & Lachmann as Tintinnus urnula in 1858. Lorica dimensions given as averaging 140 µm in length and 100 µm in diameter.

The type species of the genus Ptychocylis. Drawing from Claparède, E., Lachmann, J. 1858-1860. Etudes sur les infusoires et les rhizopodes. Mémoires de l'instut Genevois, 5, 6 & 7. - PLate 8, fig. 14. The cell is in the early stage of cell division. 'VC' shows what was thought to be a contractile vacuole. Scale bar drawn from the diameter of 0.1 mm stated in the text (P 209).