288 



Fig. 57. Chiridota pacifica 1—8 and Chiridota nanaimensis 9—12. 1 Ten-spoked 

 wheel. 2 Ciliated funnels. 3—4 Madreporites. 5 Pieces of calcareous ring. 

 6—8 Rods, 6 from tentacle-base, 7 from body-wall, 8 from digits. 9—10 Madre- 

 porites. 11 Pieces of calcareous ring. 12 Ciliated funnels. 

 1 & 6-8 X 200; 2 -4 & 9-10 X 36 ; 5 & 11 X 24 ; 12 X 120. 



