264 
Transactions of the Boyal Society of South Africa. 
The cephalic glands (Fig. 4 cf.gl.) are compactly united with the 
tegumentary tissues and help to increase their thickness in the region of 
the oesophagus. 
Fig. 6. — Posterior extremity of a male, seen from the side, showing bursa, spicules, 
and most important muscles. Magnification : 350 diameters. Composite 
drawing from two specimens. 
Nervous System. — The neural commissure, or neural psri-oesophagea 
ring (Figs. 1, 2, 3, 4 n.), encloses obliquely the lateral walls of the 
