SEA LILIES, STARFISHES, ETC.—CLARK. 105 
Off Babel Island, Bass Strait, 50-60 fathoms. 
Oyster Bay, Tasmania, 30 fathoms. 
Twenty-four miles south-south-east of Eagles Nest Rock, 
Victoria, 15 fathoms. 
Forty miles west of Kingston, South Australia, 30 fathoms. 
Off Cape Marsden, Kangaroo Island, South Australia, 17 
fathoms. 
South of St. Francis Island, South Australia, 35 fathoms: 
Genus Histocrparis, Mortensen. 
HISTOCIDARIS ELEGANS (A. Agassiz). 
Porocidaris elegans, A. Agassiz, Proc. Amer. Acad., xiv., 
SiO) pelos: 
Histocidaris elegans, Mortensen, “‘ Ingolf” Ech., pt. 1, 
1903, p. 22. 
This is an interesting quartette, each one having some point 
of special interest. The smallest is 20mm. in horizontal 
diameter (h.d.) and 12 in vertical (v.d.); there are only 6 
coronal plates in each series; the primary spines are 50-58 
mm. long, and while finely spiny have no coarse thorns ; 
the test, secondaries and collar of the white primaries are dull, 
deep gray-purple. The next specimen is 38mm. h.d. and 
25 v.d. ; there are 7 or 8 coronal plates; the primary spines 
are wonderfully fine, 100-130 mm. long, 3mm. thick, and 
very thorny near base, becoming finely spiny near tip; the 
colour is like that of the small specimen. The third specimen 
is remarkable for the size and shape of the test and the 
number of coronal plates; h.d.=71mm., and v.d.=6l, so 
that the height is .85 of h.d.; there are 12 coronal plates and 
excessive number for a recent cidarid; the primary spines 
are all broken or missing (except actinally), but it is evident 
that none were thorny ; the test is deep yellow-brown, the 
secondaries, pedicellariz, etc., dirty whitish; the general 
condition of the specimen is poor though the test is perfectly 
whole. The fourth specimen is remarkable only because of 
its large size, h.d.=78 mm.,and v.d.=58; v.d.=.75 h.d.; there 
are 10 or 11 coronal plates ; the primary spines are as a rule 
broken, but a number are whole, all are coarsely thorny and 
the longest probably exceeded 100mm. It would seem that 
in this species, as in the preceding species of Goniocidaris, the 
primary spines reach their full length, 100-130 mm. when the 
test is about half grown, and that subsequent changes are 
