48 



MR. A. W. WATERS ON TERTIARY CHILOSTOilATOUS 



Membranipora perversa, Waters, Quart. Journ. Geol. Soc. vol. 

 xxxviii. p. 264, pi. ix. fig. 32. 



Amphiblestrum cervicorne, Busk, Rep. ' Challenger/ Polyzoa, p. 66. 



Loc. Living : Williamstown (Victoria), Curtis Island (E.). 

 Station 162, 38 fath. (B.), Bondi Bay (N. S. Wales), Adelaide and 

 Port Phillip Heads (A. W. W. coll.). Fossil : Mt. Gambier and 

 Napier. 



10. Membrahtpora spenosa, Quoy & Gaimard. (PI. YIII. fig. 32.) 



Flustra sjnnosa, Q. & G. Toy. de 1'Astrolabe. 



Membranipora ciliata, MacGillivray, Trans. R. Soc. Vict. 1868, 

 p. 7 ; ibid. vol. xviii. p. 3, fig. 11 ; Zoology of Victoria, decade iii. 

 p. 30, pi. xxv. fig. 3. 



Membranipora spinosa, Busk, Trans. Roy. Soc. vol. clxviii. p. 195, 

 pi. x. fig. 3 : and ' Challenger ' Report on the Polyzoa, p. 64 ; 

 Hincks, Ann. & Mag. Nat. Hist. ser. 5, vol. vii. p. 150. 



Chaperia australis, Jullien, " Bry. Cheil." Bull. Soc. Zool. 1881, 

 vol. vi. p. 1 (sep.). 



In the fossil from Napier and in a recent specimen from New 

 Zealand there is an elongate lateral chamber on each side below 

 the operculum, and a similar structure occurs also in M. annulus, 

 but rather lower down. The length of the opesial opening is in 

 both about 0*25 millim. 



Loc. Living : Victoria, Xergnelen Island, S. Patagonia, N. S. 

 Wales, New Zealand. Fossil : Napier, N. Zealand. 



11. Membranipora Plemixgii, Busk. 



Membranvpora Flemingii, Busk, Cat. B. M. ii. p. 58, pi. lxxxiv. 

 figs. 3-5 only ; Hincks, Brit. Mar. Polyzoa, p. 162, pi. xxi. figs. 1-3 ; 

 Waters, Quart. Journ. Geol. Soc. vol. xli. p. 288. 



Loc. Living : European Seas. Possil: Aldinga (Australia), Napier. 



12. Membranipora trifolium, S. Wood. 



Por synonyms see Hincks, Brit. Mar. Polyzoa, p. 167. 



The fossil from Napier has zocecia about half as large again as 

 specimens in my collection from the English Crag. 



The opesia of* the Crag specimens are 0-15 millim. wide ; these 

 are 0*25 mm., and M. ap-pendiculata, which is related (see Q. J. G. S. 

 vol. xxii. p. 504), has the opesia about 0*4 millim. wide. I am much 

 inclined to think that it would be best to follow Smitt and call this 

 M. Flemingii, var. trifolium. In the New-Zealand fossil the ovicell 

 is flatter on the front than I have before seen. 



Loc. Living : Northern Seas. Possil : Crag, and Napier. 



13. Membrantpora occtjltata, sp. nov. (PI. VI. figs. 12, 13, and 

 PL VIII. fig. 40.) 



Zoarium adnate. Zocecia quadrate, sloping inwards towards the 

 opesia, with three spines on the upper border. Opesia nearly 

 straight below, rounded above, with the sides nearly straight, and a 

 broad serrated edge or denticle on the proximal border. In the 



