Mr. A. W. Waters on Australian Bryozoa. 19 
A figure of a young colony from Green Point is given in 
order to show a zocecium in the first stage, and those a little 
older in which calcareous nodulated structure has been formed 
on the surface and in which the avicularian chambers are 
being formed. 
Loc. Victoria; New Caledonia; Port Jackson, New South 
Wales. 
Rhynchopora longirostris, Hincks. 
Rhynchopora longirostris, Hincks, Ann. & Mag. Nat. Hist. ser. 5, vol. 
vill. p. 125, pl. iv. figs. 7, 8; Waters, Quart. Journ. Geol. Soe. 
vol. xliii. p. 70, pl. vii. fig. 22. 
Mucronella tubulosa, Hincks, op. cit. vol. vi. p. 383, pl. xvii. fig. 7. 
In my specimens from Victoria and Green Point the processes 
are irregularly nodulated. 
There is one curious abnormal mandible formed by the coales- 
cence of two at their distal ends, so that there are two bases. 
Loe. Living: Curtis Island (#.); Victoria; Green Point, 
Port Jackson, New South Wales. Fossil: Napier, New 
Zealand. 
Cellepora columnaris, Busk. (PI. II. figs. 1-6.) 
Cellepora columnaris, Busk, Zool. ‘Challenger’ Exp. pt. xxx. p. 194, 
pl. xxix. fig. 11, and pl. xxxv. fig. 16. 
Cellepora cidaris, MacG. Zool. of Vict. dec. xvii. p. 243, pl. clxy. 
fig. 4. 
I did not appreciate that the specimens from Green Point 
were the columnaris of Busk until I saw the ‘Challenger’ 
specimens. 
The columns are often very thick, occupying more space 
than a zocecium, and extend through several layers of the 
zoarium ; they are solid throughout, but the central portion 
is more transparent than the outer, and the radiating lines 
only occur in the outer layer. I would call the attention 
of paleontologists studying sections of problematic organisms 
to section fig. 4. The surface of the zocecia and columns are 
granulated, and the structure is no doubt the same as that of 
C’. cidaris, though in no parts so strongly tuberculated as in 
MacGillivray’s figure; the ovicells are not abundant, and 
where they occur are so much buried that the characters can- 
not be made out, but the surface appears to be plain ; one large 
spatulate avicularium has been seen on one of the colonies. 
Loc. Bass’s Straits, 38 fath.; Port Phillip Heads (WacG.) ; 
Green Point, Port Jackson. 
Cellepora granum, Hincks. 
For synonyms see Waters, Ann. & Mag. Nat. Hist. ser. 5, vol. xx. 
p. 198. mS 
Qe 
