PLATE XX. 



Echinocardium pennatifidum, / 1, 2. 



1. From above. 



2. In profile. 



Echinocardium flavescens, f. 3-4- 



3. Seen from above. 



4. Seen from actinal side. 



Echinocardium cordatum, /. 5 - 7- 



5. Seen from above. 



6. Profile of same. 



7. Actinal view of same. 



Meoma veutricosa, _/l S. 



8. Seen in profile, | nat. size. 

 (.4?/ Jigs, natural size, except fg. 8.) 



