351 
Venericardia lutea, Hutton. ; 
Cardita lutea, Hutton; Man. New Zealand Moll., 1880, p. 
159: Venericardia lutea, Hutton, Hedley, Trans. New Zealand 
Inst., vol. xxxviii., 1905, p. 72, pl. i, f. 6. 
Dredged 14 fathoms off Ardrossan, sixteen alive and 
several valves; 15 fathoms off Wallaroo, four alive and seven 
valves; 20 fathoms Gulf St. Vincent, two alive. 
Venericardia columnaria, Hedley and May. 
Venertcardia columnaria, Hedley and May, Records Austr. 
Mus., vol. vii., No. 2, 1908, p. 125, pl. xxv., f. 37-40. Type 
locality.—100 fathoms, off Cape Pillar, Tasmania. 
The South Australian shells are not quite so produced 
anteriorly as the type, and may have twenty-six ribs. They 
may reach 88 mm. in length and 7'7 mm. in height. Younger 
shells are comparatively more transverse. The colour is 
white, tinged with brown on the margins beyond the hinge 
plate; there may be brownish smears at both ends intern- 
ally, or the pallial line and the muscle scars may be painted 
brown; or the outer surface may be faintly brown, most 
marked at the umbos. 
Dredged in 40 fathoms off Beachport, five valves; in 49 
fathoms, twelve valves; in 100 and 110 fathoms, very many 
valves; in 150 fathoms, seventy-six valves; and in 200 
fathoms, seventeen valves; in 130 fathoms off Cape Jaffa, very 
many valves and one perfect shell. Its habitat is apparently 
from 100 to 150 fathoms. 
Venericardia delicata, nu. sp. Pl. xvi., f. 18, 19. 
Shell rather thin, transversely oval, subequilateral. 
Umbos in front of centre, directed forward, rather promin- 
ent, approximate. Post-dorsal border sloping, barely con-\ 
cave, anterior concave. Front margin well curved, ventral 
less, posterior wider, somewhat truncately convex. Radial 
ribs twenty-four, narrower than their interspaces, high, 
closely and finely transversely scaled, denticulating the mar- 
gins. Very fine accremental strie crowd the intercostal spaces, 
a larger one corresponding with each scale. Lunule nar- 
rowly cordiform, smooth, prominent in the centre. Left valve 
with two diverging cardinal teeth, tiny anterior lateral tooth 
in front of lunule; right valve with wide triangular cardinal, 
socket in front of lunule, minute posterior lateral. Interior 
white glistening, rayed by ribs, margins denticulated. 
Dim,—Antero-posterior diameter, 8°5 mm.; umbo-ven- 
tral, 72 mm. 
Colour—Sparsely irregularly dotted outside with brown. 
A living example is of a light greyish tint, spotted with 
brown disposed somewhat concentrically, and has the lunule 
