Mr. A. W. Waters on Australian Bryozoa. 13 
In the Tahiti form there is more of a peristome than in the 
variety, and some zocecia have a broad avicularium at the 
side of the peristome which does not occur in the specimens 
from Green Point, where the variety is common. 
Lepralia lonchea, B., is so closely allied to the typical Z. 
vestita that I doubt whether it should be separated. 
Lepralia elimata, Waters. 
In young zocecia from Green Point there are supraoral 
spines. 
Lepralia rectilineata, Hincks. 
Lepralia rectilineata, Hincks, Ann. & Mag. Nat. Hist. ser. 5, vol. xi. 
p- 201, pl. vii. fig. 5; Waters, Quart. Journ. Geol. Soc. vol. xliii. 
p. 60, pl. vii, fig. 16, pl. viii. figs. 34, 35, 36. 
There are only two or three zocecia from Green Point; but 
there is no mistaking their identity with the New Zealand 
form. 
Loc. Living: New Zealand; Green Point. Fossil: New 
Zealand. 
Lepralia depressa, Busk. (PI. I. figs. 13-16.) 
Lepralia depressa, Busk, Cat. Mar. Polyzoa, p. 75, pl. xci. figs, 3, 4. 
Escharella rostrigera, Smitt, Floridan Bryozoa, Sv. Vet.-Ak. Handl. 
n, ser. xi. p. 57, pl. x. figs. 2038-205. 
This was not recognized as identical with Mr. Busk’s ZL. 
depressa until | had an opportunity of examining the British 
Museum specimens. 
The bright red zoarium is incrusting. Zocecia irregularly 
rectangular, distinctly separated, with pores round the border. 
Oral aperture with straight sides and triangular proximal end, 
a small round avicularium at each side; sometimes an umbo 
on the middle of the zocecium, and from decalcified prepara- 
tions this umbo appears to be sometimes perforate. The ovi- 
celligerous cells have the aperture (0°13 millim.) much larger 
than that of the other cells (0°09 millim.); there is often an 
avicularium above the ovicelligerous aperture, and the distal 
end ot these zocecia is somewhat raised. 
Smitt gives the avicularia of various shapes. 
‘The ordinary and ovicelligerous zocecia are now known to 
have different or larger apertures in several genera, as, for 
instance, in Cribrilina elithridiata, Schizoporella hyalina, S. 
jacksoniensis, B., Lepralia bistata, W., Monoporella waipu- 
