158 ] 
RECORDS OF W.A. MUSEUM. 
The West Australian species is very easily distinguished from its 
New South Wales congeners by the entire absence of large cones 
or tubercles on the disk. 
ASTROBOA ERNAE. 
Doderlein, 1911. Uber japanische und andere Euryalae, p. 82. 
It is interesting to find specimens of this species in the collec- 
tion since it was hitherto known only from the holotype, a specimen 
22 mm. across the disk. One of the present specimens is only 15 
mm. across the disk while the others are nearly 40. But I have 
nothing to add to Doderlein’s careful description. The colour of 
these individuals in life is said to have been “ buff or leaden.” In 
alcohol, they are a peculiar shade of purplish brown, which is hard 
to name. On drying, they become very light, almost a dirty white, 
with a purplish cast. 
Off Geraldton, W.A., 29 fms. Three specimens, No. 4923. 
ECHINOIDEA. 
Although the collection of Echini is remarkable for the large 
number of species it contains, yet eleven species which were in the 
Thetis collection from New South Wales are not represented here. 
Several of these are common littoral forms of wide distribution and 
will probably be found hereafter on the West Australian coast. As 
already noted, four and possibly five of the nineteen species are new 
to science, and belong in groups of more than usual palaeontologi- 
cal interest. 
PHYLLACANTHUS M AGN IFICUS, 1 sp. nov. 
Plate XXVI. 
Test nearly spherical, 92 mm. in horizontal diameter and 72 in 
vertical ; hence v.d.-— .78 h.d. Longest primary, about 75 mm. in 
length, 10 mm. in diameter near base and 5 mm. in diameter at tip. 
Interambulacral plates 10 in each column, all, except sometimes, 
the uppermost with a long,' stout primary spine. Interambulacra 
1 The origin and significance of this name are obvious. 
