Plate 8. 



Fig. 1. Eurete erectum tubuliferum. From a photograph ; sponge viewed from side ; \. 



2. " " " Gastral hexact with scopula ; x 250. 



" 3. " " " Dermal pinulus with scopula ; x 250. 



" 4. Eurete erectum (jracile. Onychaster ; x 450. 



5. " " " Dermal pinulus ; x 250. 



" 6. Eurete erectum tubuliferum. Gastral hexact ; x 250. 



" 7. Eurete erectum mucronatum. Oxyhexaster ; x 450. 



" 8. Eicrete erectum grac'de. Gastral hexact; x 250. 

 " 9. " " " Characteristic dermal scopula; x 450. 



