^RT. 24 A NEW SPONGE FKOM SOUTH CAEOLINA — PENNEY 



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Figures 1-9. — Spongilla diacoides, new species: 1, Side view of gemmule (a, gran- 

 ular zone; b, polygons on surface of outer chitinous coat; c, area witbiu dis- 

 connected lino missing on one side of empty gemmules), X113; 2, view of gem- 

 mule from edge of discus (a, rim formed by union of outer chitinous coats from 

 both sides of gemmules), X113; 3, portion of a section through gemmular coats 

 (a, outer chitinous coat ; b, inner chitinous coat ; c, air cell ; d, ridges of poly- 

 gons of outer chitinous coat), X460; 4, 5, flesh spicules, X 1.000; 6, rotule of a 

 flesh spicule similar to but smaller than the one shown in figure 5, X 1,000 ; 7, 8, 

 skeletal spicules, X 1,000; 9, dermal spicule, X 1,000. 



