BRITISH SPONGIAD.E. 229 



Sub-section B, Skeleton spicula, spinous. 



14. Halichondria incrustans, Johnston. 



15. Candida, Bowerbank. 

 16\ irregularis, Bowerbank. 



17. Dickiei, Bowerbank. 



18. Pattersoni, Bowerbank. 

 ID. pulchella, Bowerbank. 



20. Ingalli, Bowerbank. 



21. scandens, Bowerbank. 



22. Batei, Bowerbank. 



23. granulata, Bowerbank. 



24. Hyndmani, Bowerbank. 



25. Nigricans, Bowerbank. 



26. albula, Bowerbank. 



Section * * * Skeleton spicula, spinulate. 



27. Halichondria farinaria, Bowerbank. 



28. inornatus, Bowerbank. 



1. Halichondria panicea, Johnston. 



Halichondeia sevosa, Johnston. 



Sponge. Coating massive or fistulous, very variable in 

 form, sessile ; surface smooth. Oscula simple or 

 slightly elevated ; dispersed on the surface, or collected 

 in large or small fistulous cloacae. Pores incon- 

 spicuous, numerous. Dermal membrane simple, pel- 

 lucid, abundantly spiculous; spicula either arranged 

 in rete, or irregularly dispersed. Skeleton : Spicula 

 acerate or sub-fusiformi acerate. Sarcode abundant. 



Colour. From light ash to yellow, orange, or green of 

 various tints. 



