58 
I may mention in this connection that I have got a specimen 
of A. secnrigera from the Eddystone grounds off Plymouth during 
a stay at the Biological Station at Plymouth in the summer of 
1913. The species accordingly is found off the South Coast of 
England and evidently is distributed round the British Coasts (though 
perhaps not at the North Sea Coasts), but must have been over¬ 
looked. — On the other hånd I may assert that it is an error 
when Clark in his Catalogue of Recent Ophiurans (p. 250) gives 
the Baltic Sea as the locality of A. securigera. Not a single Echi- 
noderm occurs in the greater part of the Baltic; in the Western 
part a few Echinoderms occur, but among them only a single spec¬ 
ies of Ophiurids, Ophiura albida. It may be gathered from this 
faet that also the statement of A. H. Clark 1 ) that Antedon pe- 
tasus occurs in the Baltic is based only on an error of labels. 
6. Amphiura Griegi n. sp. 
(Fig. 4, a—d). 
Disk 5.5 mm in diameter; arms five. Middle of disk covered 
by very small imbricating scales, among which no primaries can 
be distinguished; towards the edge of the interradii they disappear 
completely, the outer part of the disk thus remaining naked. The 
scales surrounding the radial shields are somewhat larger and, in 
the single, dried, specimen, these scales make a very conspicuous 
border round the radial shields, contrasting notably against the other 
scales of the disk. There are about 8 scales in a transverse line 
in the narrowest part between each two neighbouring radial shields. 
The radial shields are rather large, more than half the radius of 
the disk; they are pear-seed shaped, separated throughout by a 
wedge of narrow, slightly elongated scales. The dorsal plates are 
distinetly wider than long, with the outer edge nearly straight, the 
whole inner edge making a regular halfcircle; at the base of the 
arm they are somewhat narrower, the inner edge not so distinetly 
rounded. The oral shields are almost rhomboidal, with the outer 
end truncated; adoral plates rather broad. Two oral papillæ, the 
outer one cylindrical, spinelike. The papilla of the first oral tent- 
x ) Notes sur les Crinoides actuels du Muséum d'hist. naturelle de Paris. 
Buil. Mus. d’hist. Nat. 1911, p. 256. („Mer Baltique, un bel exemplaire“). 
