RECORDS OF IV. A. MUSEUM. 
[153 
OPHIOTHRIX SPONGICOLA. 
Stimpson, 1S55. Proc. Acad. Nat. Sci. Philadelphia, vol. 7, p. 3G 
This is another of the New South Wales species, which might 
naturally be expected in West Australian waters. For an account 
of its more recent history see Thetis Echinoderms, Mem. Aust. Mus. 
vol. 4, p. 546. 
Between Fremantle and Geraldton, W.A. One specimen in 
poor condition. No. 4930. 
OPHIOTHRIX STELLIGERA. 
Lyman, 1874. Bull. M.C.Z., vol. 3, p. 237. 
This species, which was taken by Michaelsen and Hartmeyer 
at five stations, is represented by a rather large specimen, with disk 
8 mm. across, and the most nearly complete arm from 3 2 '35 mm • 
long. It is in fairly good condition. It seems to have been taken 
with the previous species, as it was in the some vial and bears the 
same catalogue number. 
Between Fremantle and Geraldton, W.A. One specimen, 
No. 4930. 
OPHIOMYXA AUSTRALIS. 
Liitken, 1869. Add. ad Hist. Oph., pt. 3, p. 45. 
This is the second of the three species in this collection, which 
were also taken by Michaelsen and Hartmeyer ; they found it at 
four stations. It was also taken by the Thetis and by the Challenger, 
so it may naturally be considered one of the commonest Australian 
brittle stars. 
Between Fremantle and Geraldton, W.A. One specimen in 
poor condition, No. 4928. 
ASTROGYMNOTES, 1 gen. nov. 
Disk and arms covered with a skin, which apparently contains 
no calcareous plates, except numerous rounded granules on the 
upper surface of the arms. No radial shields on upper or under 
arm-plates are visible. No madreporite. Teeth well developed, 
but oral papillae rudimentary. Arm spines and tentacle scales both 
present and easily distinguishable from each other. 
1 Gr. aster — a star; gymnotes — nakedness, in allusion to the absence of plates 
on disk and arms. 
