SEA LILIES, STARFISHES, ETC.—CLARK. 69 
medioradial plate, but distally only on every other plate ; there 
is never more than one to a plate ; nearly all these spines are 
missing in the specimens at hand, but the tubercles are con- 
spicuous and enough spines are left to show their size. The 
superomarginals bear similar but smaller and more slender 
- spines. Pedicellarize both large and small are present every- 
where, very large ones, 1.5-2 mm. long, occurring on the 
medioradial plates. Adambulacral armature essentially as 
in Z. spinulosus but pedicellarie appear to be much more 
abundant. Colour (in alcohol), yellowish-brown. Three 
specimens. 
It is not without some hesitation that I separate this 
Zoroaster from the Hawaiian species, but until something is 
known of the fauna of the vast area between southern Aus- 
tralia and the Hawaiian Islands, it seems best not to assume 
the identity of species in the two regions. Apparently the 
Australian Zoroaster is conspicuously more spiny than its 
Hawaiian congener, and since the medioradial plates and 
spines seem to furnish a tangible character, I have determined 
to give it a different name. The largest specimen has R= 
160 mm. ; r=14 mm.; R=11.5r. The primary disk-plates 
have prominent bosses like those on the medioradial plates 
and apparently, in life, bore similar conspicuous spines. 
Loc.—Great Australian Bight, 129° 28’ E., 250-450 fathoms. 
Family PEDICELLASTERID. 
Genus PEDICELLASTER, Sars. 
PEDICELLASTER RETICULATUS,! sp. nov. 
(Plate xxvii., fig. 3-4.) 
Rays 6, unequal, three larger and three smaller ; the middle 
one of the smaller trio much smaller than the others, being 
about 22 mm. long, while they are over 30mm. R=37 mm. ; 
r=5or6mm.; R=6or7r. Br=5mm.; R=7br. Brat 
middle of ray, 3.5 mm.; at tip, 1.6mm. Disk small; arms 
relatively broad for a Pedicellaster. Abactinal skeleton made 
up of slender rods and plates forming a large-meshed net- 
work ; on each arm there are about 4 longitudinal series of 
these meshes, with 20-25 meshes in each series; at many 
1. Reticulatus=with meshes like a net; in reference to the wide- 
spaced skeleton. 
