URYOZOA VROU NEAE CAPE HORN. 251 



Plate 29. 



Fig. 1. Aspidostoma giganteum, BuBk. Showing reticulate growth, half natural 

 size. From sketch made in Paris in order to show the growth approxi- 

 mately. Station unknown. 



2. Aspidostoma gigantcum, Busk. a, distal connections ; b, lateral con- 



nections through the rosette-plates. X 85. 



3. Asfidostoma gigantcum. Busk. Zooecium showing the lamina below the 



aperture, and small lateral projections at each side. X 25. 



4. Betepora spatidifera, sp. nov. Natural size. From Station 4. 



5. „ „ X 25. a, mandible, X 250 ; h, do., X 85 ; 

 e, operculum, X 85. 



6. Thalamoporella lahiata, Busk. Decalcified section, X 25. 



7. „ „ Section of opei'culura, X 85. 



8. ,, ,, X 12. From Cape Horn Exped. 



9. „ „ Specimen in Mas. d'Hist, Nat. Paris, 

 named and figured by d'Orbigny as Vinciolarla elcgans, d'Orb., 

 No. 1.3616. X 25. 



10. Entalophora regidaris, MacGill. Transverse section, showing connection 



through tubes divided by a disk, X 25. 



11. Entalophora rcgularis, MacGill. Longitudinal decalcified section, 



showing thick membranous transverse walls, X 25. 



12. Entalophora regularis, MacGill. The thick membrane projects in the 



middle, but is not closed below, ts., tentacular sheath ; at., tissue 

 attached to the tentacular sheaths and to the zocecial wall. 



13. Entalophora rcgularis, MacGill. There is a \\\vss.{th.) tube arising from 



the transverse membrane. X 85. 



14. Entalophora regidaris, MacGill. dp., diaphragm. 



15. Lagenipqra Imida, form nitens, MacGill. Operculum, X 85. 



16. „ „ „ Mandible, x85. 



17. ,, ,, End of zooecium showing ovicell, X 60. 



18. „ „ End of zooecium seen from the inside, X 50. 



19. Cellepora petiolata, sp. nov. Mandible, X 250. 



20. „ „ Operculum, X 85. 



