262 



EXPLANATION OF PLATES. 



Plate V, 



Fig. I. — Placospougia labvrintJiica, sp. n., showing oscular areas, 

 the large poral surface being on the opposite side, x 1 ; 

 16, poral surface, x i. 



Fig. 2. — LatruncnUa uatalciisis, sp. n., x 2. 



Fig. 3. — KalastycUa vasifoniiis, sp. n., x i. 



Fig. 4. — KalastrcUa vasiformis, var. minor, x i. 



Fig. 5. — Coppatias hacnUfer, sp.n., on Stelletta horrens, Kirkp., x \. 



Fig. 6. — Tethya Jiiagna, sp. n., x i ; 6a, poral areas, x 2. 



Fig. 7. — Trachya mida, sp. n., x \. 



Fig. 8. — Hymeniacidon calicnlatiim, sp. n., x ^. 



Fig. 9. — Phakellia microxephora, sp, n., x ^. 



Fig. 10. — Tragosia inftmdihuliformis,w7xv. tiata}ensis,v3.r. nov., x ^. 



Fig. II. — Syiiiigclla gorgonioides, sp. n., Fragment, x i. 



Fig. 12. — Axiuyssa fethy aides, sp. n., x i. 



Fig. 13. — Sigiiiaxiiiclla arborca, sp. n., x ^. 



Fig. 14. — Bubaris reptans, sp. n., on Halichondria pachastrell- 

 oides, Topsent, x ^ ; Fig. i^a, a small piece, from a 

 specimen preserved in formalin, showing oscular (and 

 poral ?) papillae, x 2. 



Fig. 15. — Clathria mollis, sp. n., x ^. 



Fig. 16. — Stylostichoii invohiittm, sp. n., x i. 



Fig. 17. — Histodernia natalctisc, sp. n., x 2 ; 17^, portion of 

 another specimen attached to worm tube, x 2. 



Fig. 18. — Phlaodidyon enuiititm, sp. n., x ^. 



Fig. 19. — Coscinodenna coiiccutricmii, x ^ ; 19a, sandy cortex 

 from outer surface showing poral areas, x 4. 



