Pomona College, Claremont, California 



149 



EXPLANATION OF FIGURES 



Figure I. Longitudinal section through a radial nerve of Lytec/iinus a nanus us II. 1.. 



C. The aboral end is toward the top of the page: 75i 

 Figure -• Cross section through a large pari of a radial nerve <>l Lytec/iinus. \ 



branch to ;i tube loot is shown ;ii the right: <160. 

 Figure 3. i'ius- section of a radial nerve of Lytec/iinus nearer one end than Fig. J. 



X 160. 

 Figure 4. Cross section through the band of nervous tissue found at die base oi one 



of tlte larger spines id Lytec/iinus. ' 160. 

 Figure 5. Section through a radial nerve of Lytec/iinus, drawn with l>est oil objective 



obtainable. > 7 So. 

 Figure »>. Section through a radial nerve of Strong ylocentr&tus francisconus A. Ag. 



Prawn the same as Figure S. ■ 7sii. 



