321 
Asterias calamaria. H. L. Clark. 1914. The Echinoderms of the West 
Australian Museum. Rec. W. A. Mus. I. p. 151. 
Coscinasterias — H. L. Clark. 1916. Report.Sea-Lilies 
“Endeavour”. Biol. Res. “Endeavour”. IV. p. 72. 
— H. L. Clark. 1923. Some Echinoderms from West 
Australia. J. Linn. Soc. Zool. XXXV. p. 244. 
North Cape; under stones, at low tide. 3/1. 15. 6 young specimens. 
Slipper Island; on rocks, at low tide. 20/Xll. 14. 2 specimens. 
Plimmerton; under stones, at low tide. 15/1. 15. 1 specimen. 
Wellington Harbour, 5—10 fms. 16/11. 15. 2 specimens. 
Queen Charlotte Sound, 3—10 fms. 20/1. 15. Several specimens. 
Stewart Island, 20 fms. 16/XI. 14. 2 young specimens. 
The var. reischeki of Farquhar (1909) I have no material for 
forming a definite opinion about; but I am rather inclined to think 
that it is only a local form of this variable species and hardly 
entitled to the rank of a distinet variety. 
The statement by the same author (loc. cit., 1909) that it “ap- 
pears probable that the young of this species have only 2 arms at 
first, and the number inereases with age unto 10 or 11” is so 
contrary to all what we know of Echinoderm development that it 
would for this reason alone have to be rejected as impossible. It 
is beyond any doubt that this species divides through autotomy; 
also the arms are very easily lost and again regenerating. These 
facts together perfeetly account for the instances of specimens with 
any number of young, regenerating arms. 
The crossed pedicellariæ are very similar to those of Scler- 
asterias mollis. The straight pedicellariæ have some more or less 
distinet, coarse teeth at the point and the side-edges rather dist- 
inctly serrate (Fig. 21.d). 
Farquhar’s suggestion (Op. cit. 1895) that this species may 
protect its brood is shown to be wrong through the faet that I have 
proved it to have typical pelagic larvæ. (Studies of the develop¬ 
ment and larval forms of Echinoderms. 1921. p. 192). 
VidensK. Medd. fra Dansk naturh. Foren. Bd. 79. 
21 
