Hamaker. — Nervous Syst. Nereis, 
PLATE 5. 
Transverse section of the longitudinal connectives of the ventral cord. 
Frontal section of the ventral ramus of a parapodium (compare Fig. 8), 
showing motor (?) elements in the posterior branch of the second 
parapodial nerve. 
A section similar to that in Figure 32, showing sensory elements in the 
second parapodial ne, ve. 
Motor fibres and endings in the longitudinal muscles. 
Sensory cell from the base of a parapodium. 
Sensory cell from the side of the body near the fourth segmental nerve. 
Sensory nerve termination from the anterior wall of the parapodium. 
Sensory cell from the posterior wall of the parapodium, 
Diagram to show the course of fibres in the parapodial ganglion. 
Fibres of the “sub-hypodermal plexus” ending among the glands of the 
bypodermis. 
A nerve fibre showing the spiral arrangement of the fibrillæ, and also the 
shrinking of the axis cylinder from its sheath. 
