Mr, A. W. Waters on Australian Bryozoa. 11 
Schizoporella subimmersa, vay. nov. 
(Piatt, figs. 10; 10:4,:6;-c.) 
This is much like MacGillivray’s description and figure of 
Lepralia subimmersa, but does not correspond with Hincks’s 
more recent figure. ‘The operculum of the ovicelligerous cells 
is somewhat larger than that of the ordinary zocecia, and 
forms a wide curve on the lower border. The ovicell is 
deeply immersed. 
From the avicularian chamber there is a lateral tube on 
each side (see fig. 10a, a zocecium decalcified). ‘The same 
thing is often seen in the avicularian chambers of Retepora. 
In some of the older zocecia the opercula are whitish, in con- 
sequence of a slight subsequent calcareous deposit. 
Loc. Victoria; Green Point. 
Schizoporella ambita, sp. nov. (Pl. II. fig. 7.) 
This occurs from Green Point and is in many points simi- 
lar to S. lata, MacG., also abundant from the same locality ; 
but the differences in the ovicells and avicularia enable them 
to be distinguished. 
Zoarium incrusting. Zocecia ovate, distinct, with moderate- 
sized deep pores on the front, a small round avicularium 
immediately below the aperture. Oral aperture suborbicular, 
with the proximal edge subtriangular. Ovicell wide, raised, 
the front flat, with numerous pores, the rest of the ovicell 
imperforate. 
This I have from Naples with and without the small round 
avicularium; and a specimen from Port Western, Victoria, 
sent to me as S. lata? has the characteristic ovicells and 
avicularia. 
Probably this has been placed with S. pertusa. 
In some cases a calcareous growth in the older zocecia forms 
a kind of lip in the lower part of the aperture. 
Schizoporella levigata, sp. nov. (Pl. II. fig. 8.) 
Zoarium incrusting. Zocecia small, separated by an indis- 
tinct division, surface smooth. Avicularium tumid, directed 
forwards, mandible round with a central lucida and the distal 
end dentate ; in the older cells the avicularium occupies nearly 
the whole of the front of the zocecium. ‘The oral aperture 
is nearly orbicular, the sinus(?) being formed by an are 
nearly the width of the aperture, and on each side there is a 
minute denticle. 
Ovicell short, much raised, situated considerably above the 
aperture, widely open, and not closed by the operculum. 
