PLATE XXII I". 



Schizaster canaliferus, f. 1-3. 



1. Seen in profile. 



2. Same, seen from the actinal side. 



3. Same, seen from the abactinal pole. 



Rhynobrissus pyramidalis, f. J^-G. 



4. Seen in profile. 



5. Same, seen from the actinal side. 



6. Same, seen from the abactinal pole. 



{All Figs, natural size.) 



