275 
Psilaster acuminatiis. H.L. Clark. 1923. The Echinoderm Fauna of 
South Africa. Ann. S. Afr. Mus. Xlll. p. 248. 
OfP White Island, 55 fms.; sandy mud. 1 specimen. 19/XII. 1914 
Cloudy Bay, 19 fms. 2 specimens (Capt. Bol Ion s). 
Not feeling quite convinced that the present specimens be identical 
with Sladen’s Ps. acuminatus, I sent one of them to Dr. H. L. 
Clark during his stay at the British Museum with the request 
that he would undertake to compare it with the type of that species. 
He kindly informed me that there can be no doubt of their identity, 
and accordingly the identification of these specimens with Ps. acii- 
minatus is certain enough. 
The reason for my hesitation in this identification was the faet 
that there is some discrepancy between the description and the 
figures, given by SI ad en. He describes the inferomarginal plates 
as being partly naked (“covered with membrane”); but in PI. XLII, 
fig. 8 they are represented as completely covered with rather coarse 
squamules, not at all naked — as are my specimens also. 
The number of the marginal plates is stated by Sladen to be 
40 in specimens of 65 mm R. In the specimens in hånd the num¬ 
ber of the superomarginals is 27 in two of them, measuring 36 
and 46 mm R, and 32 in the third specimen, measuring 36 mm 
R. It thus appears that there ought not to be laid too mueh stress 
on the number of the marginal plates. 
Regarding the distribution of this species there is some incert- 
ainty as to its occurence in South African seas (cf. H. L. Clark. 
Op. cit.). Only its occurrence in the New Zealand and the Austra- 
lian Seas can be regarded as an established faet. 
5. Luidia -varia n. sp. 
PI. XIII. Figs. 13-14. 
Little Barder Isl., 30 fms. Shells. 29. XII. 1914. 2 (? 3) specimens (2 disks 
and some isolated arms\ 
Colville Channel, 35 fms. Sandy mud. 21. XII. 1914. Fragment of an arm. 
Arms 7. R—ca. 150 mm; r - ca. 15 mm; R = ca. 10 r. Breadth 
of arm near base 20 mm. Arms robust, high and arched, only at the 
outer extremity somewhat flattened, tapering very gradually, the 
18* 
