U.S. NATIONAL MUSEUM 



BULLETIN 272 PLATE 6 



17 



Figures 1-20. — -1, Megasclere, Radiospongilla crateriformis, Indonesia; 2, .\ microscleres, 

 R. crateriformis, Indonesia; 4, rhegasclere, R. indica, India; 5-7, gemmoscleres, R. indica, 

 India; 8, megasclere, R. indica, Indonesia; 9, 10, gemmoscleres, R. indica, Indonesia; 11, 

 microscleres, Pectispongilla aurea; 12, megasclere, Radiospongilla sansibarica; 13, 14, 

 gemmoscleres, R. sansibarica; 15, megasclere, Pectispongilla aurea; 16, megasclere, P. 

 subspinosa; 17, 18, gemmoscleres, P. aurea; 19, gemmoscleres, P. subspinosa; 20, spher- 

 aster, P. stellijera. 



