ARCHICELOMATA. 175 
Fig. 103.—THE Rosy FEATHERSTAR (Antedon Rosacea ). 
_ Natural size. View of oral surface. The ten arms are pinnate, and from 
their bases pass five ciliated grooves to the mouth in the centre of the disc. The 
anus is situated on an inter-radial papilla (seen below the mouth in the figure). 
Fig. 104.—A HoLoTHuRIAN (Cucumaria Planci) x 2. 
Note the oral tentacles and the elongated body with five rows of tube-feet. 
