192 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 8 



PLATE 29 



Psolidium dorsipes Ludwig ?• 1+3 



1-2. Knobbed and smooth plates from ventral sole. 



3-4. Strongly knobbed plates from sole. 



5. Supporting rod from ventral tube foot. 



6. Towerlike body from dorsal side. 



7. Curved supporting plate from dorsal tube foot. 

 8-10. Cups or baskets from external layer of sole and dorsal 



side. 



11. Narrow, curved supporting rod from dorsal tube foot 

 (rare). 



12. End plate from dorsal tube foot. 



