396 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



Figure 67: 1-20. — Thyone mexicana Deichmann, p. 395. 1-2, disk of tables from body wall; 3, supporting table from tube 

 foot, side view. Pcnlacta -pygmaeus (TMel), p. 399. 4—5, knobbed buttons; 6-9, baskets from outer layer of skin; 10, 

 perforated plate; 11, knobbed plate. Thyonella pervicax (TMel), p. 399. 12-15, knobbed buttons; 16-20, baskets 

 from outer layer of skin. Neothyone belli (Ludwig), p. 397. 21, knobbed button with knobbed handle; 22, supporting 

 table from tube foot. Magnification: X400 Division 1/100 mm. 



