126 Journal of Entomology and Zoology 
EXPLANATION OF FIGURES 
Fig. 1. Cross section of the circum oral nerve of Asterina miniata. X55. 
Fig. 2. Cross section of the radial nerve of Linckia columbia. X55. 
Fig. 3. Cross section of the radial nerve of Pisaster ochraceus. X55. 
Fig. 4. Cross section of the radial nerve of 4stropecien erinaceus. X55. 
Fig. 5. Cross section of a very large specimen of P. ochraceus. X55. 
Fig. 6. A portion of the middle line of a cross section of the radial nerve of a large 
specimen of P. ochraceus. X800. 
