BRYOZOA FROM AUSTRALIA. 435 



26. MlCROPORA ORDLNATA, Sp. nOV. 



Zoarium in Escliara-iorm. (flat piece about | inch square). Zooecia 

 flat, separated by a wide margin, depressed, especially at the distal 

 end, oblong, arched above, with few large granulations and few pores. 

 Oral aperture close up to the distal end, rounded above, straight 

 below, with a raised lip. It would seem to be a Micropora and not 

 a Steganojporella, but the two genera are difficult to distinguish in the 

 fossil state. This seems to be somewhat similar to Eschara verrucosa, 

 T. Woods (non Peach), " On some Tert. Austral. Polyzoa," Tr. Roy. 

 Soc. N. S. W. 1876, p. 2, fig. viii. ; but it differs in not having the 

 aperture about the middle of the zocecium as figured, and also in the 

 bsence of marginal pores. Aperture 0*3 millim. wide. 



Loc. Waurn Ponds. 



27. Micropora cavata, sp. nov. 



Zoarium in Eschara-form foliaceous. Zocecia hexagonal, the 

 area round the aperture very much depressed. The aperture is 

 about a third of the length of a zocecium from the distal end, semi- 

 circular, with a very distinct lip directed vertically upwards, streng- 

 thened at each end by a thickening. Above the aperture the cell- 

 wall is often much thickened, forming a hood to the aperture. Width 

 of aperture 0*25 millim. 



Loc. Waurn Ponds. 



28. MOXOPORELLA SEXANGTJLARIS, Goldf. 



Eschara seooangularis, Hagenow, Maestrichter Kreide, p. 81, pi. x. 

 figs. 3, 4, 5. 



Eschara ClarJcei, T. Woods, " On some Tertiary Australian Poly- 

 zoa,'' Tr. Roy. Soc. N. S. Wales, 1876, p. 2, figs.' iv.-vii. 



This seems to be the same species as one I have from Maestricht 

 which I have called sexangularis, though with a little doubt, as I can- 

 not find any zooecial avicularia. The zooecia from Bird Rock are 

 slightly larger than those from Maestricht ; but the aperture is of the 

 same size. I do not understand what Mr. Woods means by " pore 

 for the avicularium upon the summit,'" as there is nothing of the 

 kind in my specimens and he does not show it in his figures. This 

 would seem to be allied to Semieschara disparilis, d'Orb. (Pal. Fr. 

 pi. 709. figs. 9-12). 



In a specimen from Bird Rock a small indentation on each side of 

 the base of the aperture shows us that we are dealing with the oral 

 aperture and not with an opesial opening; and it is therefore placed 

 with Monopordla. Aperture 0*37 millim. wide. 



Loc. Muddy Creek ( Woods, and Wilson's coll.). Bird Rock and 

 Waurn Ponds. 



29. Monoporella crassatixa, Waters. 



Monopordla crassatina, Waters, On Foss. Chil. Bry. from Mt. 

 Gambier, Quart. Journ. Geol. Soc. vol. xxxviii. p. 270, pi. vii. fig. 8. 



Loc. Mt. Gambier (W.), Napier, New Zealand (in Miss Jelly's 

 collection as recent Tertiary). Waurn Ponds. 



