SEA LILIES, STARFISHES, ETC.—CLARK. Vs: 
where so far as I van discover, in which particular this speci- 
men agrees with individuals from Westernport, Victoria. 
Loc.—Sanders Bank, Kangaroo Island, South Australia, 
28 fathoms. 
COSCINASTERIAS DUBIA, H. L. Clark. 
(Plate xxx., fig. 1-2; Fig. 11.) 
Coscinasterias dubia, H. L. Clark, Mem. Austr. Mus., iv., 
11, 1909, p. 532. 
This is a much better series of specimens than those col- 
lected by the “ Thetis’ on which the species was based. 
They are as a rule very well preserved and range in size from 
R=22 mm. to R=138 mm. The pedicellariz are much more 
numerous, particularly along the ambulacral furrow, than in 
the “‘ Thetis ’ specimens, and the membrane connecting the 
marginal spines is not distinguishable ; it is probable that its. 
conspicuousness in the “‘ Thetis ”’ specimens was due to their 
poor preservation. The second series of actinolateral spines 
is often provided with wreaths of pedicellariz. As growth 
changes, one notes that in the smallest specimen while there 
are 5 fairly well-marked series of plates on the abactinal 
surface, above the inferomarginals, half or more of the supero- 
marginals carry no spines ; there is only one series of actino- 
lateral spines and this is confined to the basal half of the arm ; 
the inferomarginal spines are relatively long and narrow, not 
at all widened at the tip; large pedicellariz are relatively 
few and are virtually wanting along the ambulacral furrow. 
Fig. 11.x15. 
In the largest specimen, on the other hand, one notes that 
while all the superomarginals carry conspicuous spines, there 
