SEA LILIES, STARFISHES, ETC. CLARK. 117 



when moist ; small spines, pale cream-colour or whitish ; 

 large spines, deep olive-green or greenish-bro\^'n, more or less 

 extensively tipped with whitish. This is essentially the 

 colouration of the holotype and is apparently the character- 

 istic colouration of the species, which seems to me a perfectly 

 valid one. Four specimens. 



Locs. — Oyster Bay, Tasmania, 



East coast of Fhnders Island, Bass Strait. 



Forty miles west of Kingston, South Australia, 30 fathoms. 



Genus Holopneustes, L. Agassiz and Desor. 

 HoLOPNEusTES INFLATUS, A. Agassiz. 



Holopneustes inflatus, A. Agassiz, Bull. Mus. Comp. Zool. 

 Harvard, iii., 1872, p. 56. 



The smallest individual is 30 mm. h.d. and 23 mm. high, 

 while the largest is 72 mm. h.d. and 65 mm. high. All three 

 specimens are light coloured, the spines both large and small 

 being pale gray or nearly cream-colour. The test is decidedly 

 darker, at least when wet. It is interesting to note that in 

 this species, as in the preceding and in Echinus horridus, the 

 relative height increases with age ; in the present case the 

 increase is from .77 h.d. to a trifle over .90. Four specimens. 



Locs. — North-east of Cape Pillar, Tasmania, 80 fathoms. 



Oyster Bay, Tasmania. ' 



East coast of Flicders Island, Bass Strait. 



Holopneustes porosissimus, L. Agassiz and Desor. 



Holopneustes porosissimus, Agassiz and Desor, Ann. Sci. 

 Nat., Zool., vi., 1846, p. 364. 



This individual is 40 mm. in diameter and 38 mm. high ; 

 the height is thus .95 h.d. The ambulacra are 13 mm. wide 

 and the interambulacra 11.5 mm. The test is dull purple 

 and the spines are dull purpUsh-red, without any green (as is 

 usual) near the base. 



Loc.—Ofi Cape Marsden, Kangaroo Island, South AustraUa. 



