PLATE XIII'*. 



Mellita Stokesii, /. 1. 



1. Part of abactinal floor removed to show the internal structure, nat. size. 



Astriclypeus Manni, /. 2-^. 



3. Part of abactinal floor removed to show the structure of edge of test. 



2. Seen from the actinal side. 



4. The same, seen from the opposite side. 



Encope grandis, /. 5, 6. 



5. Seen from the abactinal pole. 



6. Seen from the actinal side. 



{Figs. 2-6 two thirds natural size.) 



