348 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 11 



PLATE 9 



Theelothuria paraprinceps (Deichmann) 



Figs. 1-3. Reduced tables from skin. 



Figs. 4-14. Various stages of buttons; the small smooth ones are 



from the ventrum. 

 Fig. IS. Large tack-shaped table from adult. 



Figs. 16-17. Smaller tack-shaped tables from specimen a few cm 



long, with traces of fusion of separate pillars. 

 Fig. 18. Synallactidlike type of table from young individual 



from off San Lucas. 



(Magnification: Each division is l/lOO mm) 



