Pomona College, Claremont, California 175 
EXPLANATION OF FIGURES 
Figures 1-3. Cross sections through the superficial radial nerve of an adult serpent 
star. X350. 
Figures 2 and 3 do not show the whole breadth, and Fig. 2 shows a little 
of the deeper more dorsal nerve area. 
Figure 4. Section through the pedal ganglion of an adult. X35U. 
Figure 5. Section through the circum oral strand of a serpent star of 1mm. disc diam- 
eter. X350. 
Figure 7. Cross section through the narrowest part of the radial nerve strand of a 
1 mm. serpent star. 
Figures 8-9. Longitudinal section through the nervous system of the arm of a 1 mm. 
serpent star. X75. 
Figure 10. Nerve cells from the nerve strands of adult serpent star fixed in Flem- 
ming's fluid. X700. 
