AND PORTLAND OOLITE OT WILTS, ETC. 565 



Fig. 5. Astroccenia major: some calices a little magnified. 



6. Isastrcsa oblonga: some corallites of a polished specimen, magnified, 



showing the thin walls and interlocular dissepiments. 



7. LatimmandrarcBa decorata : the corallum, natural size, showing marginal 



gemmation. 



8. : natural size, seen from above. 



9. : magnified portions of the outer margins of some septa, 



showing their perforations and peculiar synapticulaB. 



10. : a smaller specimen showing the peduncular portion. 



11. Crateroseris fungiformis : the corallum, natural size. 



12. : the weathered outer margins of some septa, showing the 



synapticulge. 



13. : some calices, magnified. 



14. : some of the mural costas, magnified. 



15. Latimcsandrarcsa decorata : a furrow, magnified and showing the 



columella. 



16. Astroccenia mayor : a septum magnified, showing its lateral orna- 



mentation. 



