280 
Adambulacral plates with mostly three spines, a smaller, curved, 
compressed, saber-shaped furrow spine and two larger outer spines, 
adorally to which are placed 2—3 smaller spines (Fig. 6.a); in 
younger specimens the outer (third) spine is very siender and 
inconspicuous. Mouth plates (Fig. 6.b) on each half with a regular 
Fig. 6. Luidia ncozelanica. a. Adambulacral plales ; b. mouth-plates (jaw); 
c. pedicellaria on an oral intermediate plate; d. paxillæ a—b. Ø/i; c-d. 
series of spines along midline and a similar marginal series, 
diminishing gradually in size outwards. A pair of strong teeth on 
the oral edge and under these a pair of large, two-valved pedicel- 
lariæ or two spines placed close together. — Intermediate plates 
very small and inconspicuous, in a single series, carrying very few 
siender spinelets, or a single large bivalved pedicellaria of a more 
or less clavate shape (Fig. 6.c); in the larger specimen these pedi- 
cellariæ occur on most of the plates, in the smaller ones only now 
and then. 
Colour a uniform brownish; the tubefeet not dark. Base of 
marginal spines brownish. 
The Luidia mentioned by Ben ham (Op. cit.) evidently belongs 
to this species, in spite of the faet that it is stated to have a 
larger central spine on the paxillæ. As mentioned above there is 
an indication of the same condition in one of my specimens. 
The present species is very closely related to L. asthenosoma 
Fisher from the Californian coasts and to L. orientalis Fisher from 
the Chinese seas so closely, in faet, that were these found 
together, one would hardly think of regarding them as distinet 
