Plate XX. 



Aceste bellidifera Wyv. Thoms. Schizaster canaliferus Lamck. 



P. 88. 



Fig. 234. The skeleton of Aceste bellidifera Wyv. Thoms., laid ont. 



Fig. 235. The buocal raembrane of the same. 



Pig. 236. The anal membrniie of the same. 



Fig. 237. The calycinal system of the same. 



Fig. 238. The calycinal system of Schizaster canaliferus Lamck. 



I 



