BRY0Z0A FROM S.W. VICTORIA, AUSTRALIA. 



325 



employed in this or neighbouring genera, I have allowed myself to 

 stretch a point in choosing a name. This would belong to Nellia of 

 Busk ; but that is a genus which, as denned, cannot possibly be 

 maintained, and the present species with zocecial avicularia shows 

 how unsatisfactory a character the absence or presence of avicularia 

 is. Nellia, Busk, is almost synonymous with Quadricellaria, d'Orb. 

 This is very closely allied to Nellia simplex, Busk, from Prince of 

 Wales's Channel, Torres Strait ; the aperture in that case, however, is 

 0-5 millim. long and a regular ellipse, while in M. lusoria it is only 

 0*25 millim. long. Fig. 14 was drawn from a worn specimen with- 

 out avicularia, before I had seen the one figured as 82 ; and then 

 I could not make out all the structure. 



22. MEiiBRANiPORA maorica, Stol. (in Vincularia} forma). Plate XIV. 

 fig. 9. 



Vincularia maorica, Stol. Foss. Bry. Orak. p. 153, pi. xx. fig. 8. 



Vincularial maorica, Hutton, on some Austral. Polyz. p. 23, 

 Eep. K. Soc. Tasmania, 1877. 



Vincularia maorica, T. Woods, " Corals & Bryozoa of the Neozoic 

 period in New Zealand," Palaeont. of New Zeal., Col. Mus. & G. S. 

 Dept. 1880, p. 27. 



Zoarium erect, with six cells in a series, or, thickening out, in 

 places there are eight. Zocecia with a raised border, rounded, with 

 a tendency to be hexagonal, calcareous, front of the zooecia de- 

 pressed, two tubercles above each zocecium. Aperture (usually 

 rather larger than figured) slightly trifoliate, distal edge rounded, 

 and proximal edge straight. Avicularia large, occupying the place 

 of a zocecium. Two round rosette plates near the middle of the 

 distal wall. (In the same position as shown in fig. 21.) 



It is evident, from the description and the figure of the section, 

 that Stoliczka's specimen was somewhat worn ; and in such a case 

 the cells would assume an entirely hexagonal form. The presence 

 of the tubercles is indicated in his figure of the section. The avicu- 

 laria are the same as those so common in many of the fossil Mem- 

 braniporce—foY example, M. angulosa, Rss. (see my figure in Bry. of 

 Bay of Naples, pi. xiii. fig. 3, Ann. &Mag. Nat. Hist. s. 5, vol. iii.); 

 and it is interesting to find this with a distinctly Yincularian mode 

 of growth. Smitt, when he broke up the old genera Lepralia and 

 Eschara, indicated the colonial form by adding " Lepralia- , Eschar a-, 

 or Hemescliara-iormsb " ; and we may further extend the principle 

 by speaking of Vincularia-iorma, : thus the form of cell and the 

 eneric relationship will be shown, together with the mode of 

 rowth. 



Loc. Living, Tasmania (Hutton). Fossil : Orakei Bay ; Hutchin- 

 on's Quarry, Oamaru (New ZeaL) ; Upper Eocene of New-Zealand 

 eologists. 



3. Membranipora geminata, sp. nov. Plate XYI. fig. 55. 

 I have only found a small fragment of this ; but it seems to be 

 branching form, with two cells diagonally to oue side, followed by 

 Q. J. G. S. No. 147. z 



