■ P"""' 



I 



Plate 8. 



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



« 



u 



a 



« 



a 



« 



ct 



u 



1 



■ 



9 



3. 



5. 



u 



a 



« 



u 



a 



a 



Gastral hexact with scopula ; x 250. 

 Dermal pinulus with scopula ; x 250. 



4. Eurete erectum gracile. Onychaster ; x 450. 



u 



a 



u 



Dermal pinulus ; x 250. 



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



7. Eurete erectum mucronatum. Oxyhexaster ; x 450. 



8. Eurete erectum gracile. Gastral hexact; x 250. 



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





