Dorsal lorica spindle-shaped, its widest part near the middle but the caudal half usually tapering gently than the anterior one, since the latter often pointed although provided with a cleft in the middle. Ventral lorica is like a triangular flag; its widest part near the anterior extremity is 2-lobed in shape and spinous along the margin. Caudal part is rather round than truncated, not only in the dorso-ventral but also in the lateral view and much more elongated than in fissa.
Dorsal lorica length 80 µm, width 45 µm, width/length 0.54-0.56.
