BETOZOA FKOM NEW ZEALAND. 



71 



Mr. Busk, and no one, however eminent, has authority to alter a 

 well-established name. The genus, however, can only be looked upon 

 as provisional, since it is almost entirely based on the mode of growth. 

 This I have already shown to be unsatisfactory, and within the last 

 few weeks have received from New South Wales a recent specimen 

 of Flabelloporci elegans, d'Orb., which is either Lunulites cancellatus, 

 Busk, or very closely allied to it. This grows in an irregular sub- 

 crescentic form with two layers of zocecia separated by a cellular 

 structure formed of avicularian cells. 



Log. Possil : European Cretaceous, Miocene and Pliocene ; Mt. 

 Gambier, Muddy Creek, Bird Rock (Australia) ; Napier and Wanganui 

 (New Zealand). 



Besides the species discussed, there are some specimens of Retejpora 

 from near Napier, and a Caberea from Waipukurau which may be 

 the 0. crassimarginata of Busk. 



EXPLANATION OP PLATES VI.-VJII. 

 Plate VI. 



Pig. 1. Membranipora Lacroixii, Aud., var. grandis. From Napier. 



2. annuhis, Manz. 



3. monostaxhys. Froni Napier. 



4. Dumcrilii, Aud. From Waipukurau. 



5. anmdus, Manz. From the same specimen as fig. 2. 



6. monostachys. From the same specimen as fig. 3. From Napier. 



7. nobilis, Pss. From Petane. 



8. Monoporella disjuncta, Manz. From Napier. 



9. Membranipora cumulus, Manz. 



10. nobilis, E,ss., with cells like ovalis. From Napier. 



11. Monoporella waipukurensis, sp. nov. From Waipukurau. 



12. Membranipora occultata, sp. nov., fossil. From Napier. 



13. recent. 



[14. Cancelled.] 



Plate VII. 



Fig. 15. Monoporella crassatina, Waters. Whakati. 



16. Lepralia rectilineata, Hincks. From Waipukurau. 



17. rostrigera, Sm. From Napier. 



18. Membraniporella nitida, J. Erom Waipukurau. 



19. Lepralia semiluna, var. simplex, nov. From Napier. 



20. Mucronella firmata, sp. nov. From Waipukurau. 



21. Schizoporella conservata, Waters. Napier. 



22. Ehynchnpora longirostris, Hincks. From Napier. 



23. Porina grandipura, sp. nov. Erom Napier. 



24. Mucronella alvareziana, B., X 25. From Waipukurau. 



25. , x 85. Ditto. 



Plate VIII. 



Pig. 26. Schizoporella tuberosa, Ess., var. angustata. From Napier. 



27. Micropora variperforata, sp. nov. 



28. Schizoporella cinctipora, H., var. personata. From Petane. 



29. tuberosa, Rss., recent. From Napier. 



30. Mucronella tricuspis, Hincks, var. waipukurensis ; front of cells 



broken clown. 



31. Mucronella porosa, H., var. minima. Prom Petane. 



32. Membranipora spinosa, Q. & G-. From Napier. 



33. Cellepora decepta, sp. nov. From Napier. 



