28 AUSTRALASIAN ANTARCTIC EXPEDITION. 
from the West coast of Tasmania represented both figured examples of the Challenger 
report and confirm the opinion there expressed, of the occurrence of sexual differences 
of form." 
Occurrence.—No. 60 (12th December, 1912), 1,300 fathoms. 
CYTHERE SABULOSA G. S. Brady. 
Cythere sabulosa G. S. Brady, 1880, Rep. Chall. Zool., vol. I, pt. HI, p. 80, 
pl. XIX, figs. la-h.. 
Observations —C. sabulosa was previously recorded from Booby Island, Torres 
Strait, 6-8 fathoms. The single valve found west of Tasmania is in every way 
comparable in outline and surface ornament, though the latter does not show any 
spinous elevations, as in some “ Challenger ” examples. 
Occurrence.—No. 59 (12th December, 1912), 1,320 fathoms. 
CYTHERE SCABROCUNEATA G. S. Brady. 
Cythere scabrocuneata G. 8. Brady, 1880, Rep. Chall. Zool,, vol. I, pt. ILI, p. 103, 
pl. XVII, figs. 5a-f; pl. XXIII, figs. 2a-c. Egger, 1901, Abhandl. d. k. bayer. Ak. Wiss., 
vol. XXI, pt. Il, p. 441, pl. VIII, figs. 1-3. Chapman, 1914, Proc. R. Soc. Vict., 
vol. XXVII (N.S.), pt. I, p. 40, pl. VIII, fig. 25. Idem, 1915, Sci. Res. “ Endeavour,” 
vol. III, pt. I, p. 48. 
Observations.—The present record of depth of habitat is in excess of previous 
occurrences, though nearly approached by the “ Endeavour” specimens from a depth 
of 1,122 fathoms, East of Tasmania. The species is almost confined to the Australian 
region and has lived on from Miocene times, as it is known from the Janjukian of the 
Victorian Mallee. 
Occurrence.—Additional sample (3rd September, 1912), 706 fathoms. No. 150 
(24th February, 1914), 1,800 fathoms. 
CYTHERE SCALARIS @. S. Brady. 
Cythere scalaris G. 8. Brady, 1880, Rep. Chall. Zool., vol. II, pt. III, p. 87, 
pl. XXI, figs. 8a-c. 
Observations.—This species was hitherto only known from Torres Strait and 
Magellan Straits. The valve occurring here, in a sample from West of Tasmania is 
quite typical. 
Occurrence.—No. 60 (12th December, 1912), 1,300 fathoms. 
CYTHERE SCINTILLULATA CG. S. Brady. 
Cythere scintillulata G. S. Brady, 1880, Rep. Chall. Zool., vol. I, pt. III, p. 62, 
pl. XIV, figs. 8a-d. Chapman, 1914, Proc. R. Soc. Vict., vol. XXVII (N.5.), pt. I, 
p. 41, pl. VIII, figs. 26. 
1 Op. cit., 1880, p. 83. 
