42t> MR. A. W. WATERS ON THE RELATIONSHIPS 



Fig. 21. Conescliarellina angulopora, T, Woods, X 25. Lower surface. From Port 

 Stephens, N. S. Wales. 

 22. Conescliarellina prob. cancellata, Busk, x 25. Lower surface. From off Port 

 Stephens. 



Pl^te 30. 



Fig'. 1. Cupularia Zowei, Busk, X 50. Decalcified preparation, looked at from the front. 



Through the membrane the bundles of muscles attached to it can be seen and 



they pass through the frontal pores. 

 2. Do. do. x 50. The same preparation focussed at a lower level. The 



circular opening is shown through which the polypide pas es and the tubular 



connections from this opening' to the neighbouring zocecia. The polypide is faintly 



shown in the right-hand zocecium. 

 8. Do. do. x 50. The same preparation seen from the dorsal surface. A 



line of muscles (m.) reaching' down to the zocecial chamber is seen, and the poly- 



pides are usually alternately right and left in each radial row of zooecia. 



4. Do. do. x 25. Dorsal surface showing pore at the end of the groove. 



5. Do. do. X 85, Somewhat pressed down, so that the row of muscles are 

 seen laterally. 



0. Do. do. Lateral section ; diagrammatic, showing rows of muscles at- 

 tached to the lower membrane (l.m.) and to the zooecial chamber (z.c.). 



7. Selenaria concinna, T. Woods, x 25. From Port Stephens. 



8. Do. do. x 50. Vibraculum. 



9. Selenaria concinna, Busk, X 25. Showing central zooecia and a few of the border 



zocecia. From off Port Stephens. 



10. . Do. do. X 25. Section showing double expansion of a pore-tube under 

 the supporting flake. 



11. Cupularia canariensis, Busk, X 25. Central zocecia with eight surrounding zocecia. 



From Petit Tahou, Liberia. 



12. Do. do. X 15. Under surface of same with large sand grain. 



13. Selenaria metadata, Busk, X 325. Portion of vibracular seta showing spinous 



fringe on one side. 

 11. Do. do. x 150? Operculum from inside showing trabecular, and below 



the operculum two muscles attached to the frontal membrane. 

 15. Do. do. X 85. Size for comparison with previous figures. 



10. Lvmilites capulus, Busk, X 85. Vibracular seta. 



17. Trochopora conica, Def., X 25. From Salles : Fossil. 



18. Conescliarellina angustata, d'Orb., X 25. From China {A. W. coll.). 



19. Conescliarellina anc/ulopora, T. Woods, X 6. Showing growth over the apex. 



20. Cunescharellina pltilippinensis, Busk, X 85. Decalcified to show the position of the 



zocecial (zc.) and avicularian (ai'c.) chambers. 



21. Cupularia canariensis, Bu ? k, X 150. Base of seta and front wall of the vibracular 



chamber. 



22. Do. do. x 150. Operculum seen from inside together with the frontal 

 membrane showing' trabecules. 



23. Cupularia Johnsoni, Busk, X 150. Operculum from inside with the bordering ridge 



or trabecule united to the zocecial border. 

 21. Conescliarellina philippinp-nsi", Busk, X 25. Young- colony. 



