44 NOTES. 
in the cold weather, but is seldom taken in the dredge. Its 
range North extends to Port Stephens, and Mr. Trntson- W oops 
says Moreton Bay; to the South, about Botany, Port Hacking, 
&¢., it is abundant. I have not yet seen specimens from the 
South Coast or Tasmania, but it is more probable that this is the 
form found there, and not P. dubia. 
PHYLLACANTHUS AUSTRALIS, Sp. Nov. 
Of this hitherto unique and beautiful species I had only seen 
one specimen until quite recently, when I was fortunate enough 
to obtain from the trawl a second specimen, both were taken in 
about 6 fathoms, one near South Reef, the other under Shark 
Point, off a rocky bottom. At first sight it appears to resemble 
P. baculosa, but as will be readily seen from the Photographs, 
pl. 1, the spines are flatter, fewer in number and stouter, 
the serations larger and the sculpture different, besides the 
large flattened primary spines are fluted and expanded at 
the tips. 
GONIOCIDARIS TUBARIA. 
This species is far from common in Port Jackson, a few have 
been swept from the rocky bottom near South Reef by the 
tangles of the dredge in 5 to 10 fathoms. 
GONIOCIDARIS GERANIOIDES. 
I have never met with this species in Port Jackson, but on 
the South Coast it is not rare; the Museum specimens were 
obtained in Port Phillip. 
DIADEMA SETOSUM. 
The southern limit in Australia of this species seems to be 
Wide Bay. Very young specimens, which eventually proved 
to belong to Centrostephanus rodgersii, were mistaken by 
Mr. Trentson- Woops and myself for the young of this species, 
and consequently D. setoswm was reported from Port Jackson. 
Onall the reefs north of Wide Bay, and at Ugi, Solomon Islands, 
our Collectors found this species plentiful. We have also 
received fine specimens from Mr. Smirunurst, collected in 
New Caledonia. 
CENTROSTEPHANUS RODGERSII. 
As mentioned before, the young of this species, with a test 
about 0°5 inch in diameter and with long slender spines measuring 
1:5 to 2 inches or more in length, were mistaken for the young 
of Diadema setosum. In the immature stages they are even 
