Drawing

Description :

Bicosoeca pocillum Kent, 1880. Bicosoeca cells in which the lorica is cup-shaped or subcylindrical, rounded posteriorly, the anterior margin abruptly truncate, neither everted or constricted, varying in height from one and a half to two or three times its greatest breadth, pedicel short, rarely half as high as the lorica, cell is rounded posteriorly, the anterior margin flattened, with on one side as a broad, flattened, lip-like process, occupying from one third to one half of the cavity of the lorica, posterior retractile ligament equalling the body in length, contractile vacuole posteriorly situated, nucleus spherical, subcentral. Length of lorica 10.2 to 17 microns, cell 7.8 microns