6 Mr. A. W. Waters on Australian Bryozoa. 
Eschara suleata, M.-Edw. Ann. des Sci. Nat. 2° sér. tom. vi. p. 48, 
pl. v. fig. 2. 
Eschara mucronata, MacG. Zool. of Vict. dec. v. p. 48, pl. xlviil. 
figs. 6, 7. 
Adeonellopsis latipuncta, MacG. Trans. Roy. Soe. Vict. vol. xxii. p. 154, 
pl. ii. fig. 5. 
A specimen from Green Point, Port Jackson, is a flat piece, 
evidently part of a large foliaceous growth, and is the A. 
latipuncta of MacGillivray. Broad and narrow pieces from 
Port Phillip in my collection show that the width must not 
be made a specific character ; and the ‘ Challenger’ dredged 
fragments of three sizes from Station 162, of which the 
narrower one is only ‘2 millim. in diameter. A branched 
specimen from Green Point is the Adeonellopsis australis of 
MacGillivray ; but in the size of the oral aperture, the form 
of the chitinous elements, and the other zoccial characters I 
cannot find any difference from the above and do not think 
that the broad and narrow forms should be separated. 
In the Green Point ‘ latzpuncta”’ specimen there is always 
the central avicularium directed upwards and usually one 
small one at the side of the aperture, sometimes two; but 
there is seldom one below the cribriform area. In many of 
the Australian specimens, both recent and fossil, there is in 
different parts of the same colony considerable variation with 
regard to the avicularia. In the typical Miocene JZ. coscino- 
pora there is only a central avicularium, but the zocecial cha- 
racters are generally similar. 
Loc. Living: Port Phillip (Victoria); ‘Challenger,’ 
Station 162, 88-40 fath.; Green Point, Port Jackson. Fos- 
sil: Curdie’s Creek, Muddy Creek (Victoria) ; River-Murray 
Cliffs (South Australia). 
Microporella inversa, Waters. (Pl. I. figs. 11, 12.) 
Porina inversa, Waters, Ann. & Mag. Nat. Hist. ser. 5, vol. xx. p. 190, 
pl. iv. fig. 28, pl. v. fig.5; Whitelegge, Proc. Linn. Soc. N. 8. 
Wales, ser. 2, vol. ii. p. 680, 
Much better specimens received from Green Point have 
revealed several points not seen in the specimens previously 
described. The pores on the front are distinctly stellate, as 
can be readily seen in mature zocecia, though not distinguished 
in old cells without preparation, and the formation of these 
stellate pores is instructive. 
At first raised tubes are formed (fig. 11, left-hand upper 
zocecium), and in a later stage the stellate closure grows on 
the top (fig. 11, right-hand zocecium); but as calcareous 
growth progresses the teeth are at the base of a round 
