TRIBE CONCHACEA. 119 
V. Histrionica. Brod. § Sow. Z. P. 1835. Obovate, pale 
fulvous with irregular brown interrupted rayed spots and radiating 
rib-like striz, which are rough, prettily decussated, and usually in 
pairs ; dorsal edge straightish, anteriorly sub-angulated ; lunule 
large and heart-shaped ; inside whitish. 1545. .1,8.—C. America. 
V.Spurca. Sow.Z.P.1835. Ovate, thick, with radiating blotches 
of brown and fulvous, with subobsolete concentric rib-like striz, 
which are obtuse, and rather interrupted near the sides. -2,. .1+4. 
— Valparaiso. 
V. Cotumsiensis. Sow. Z. P. 1835. Rounded elliptic, thick, 
varied with white and ash colour, with radiating ribs, which are 
numerous, flattened, rounded and twice as large as the interstices : 
posterior side the shorter, its ribs with decussating short and obtuse 
scales, the anterior ribs wrinkled, central ribs smoothish ; whitish 
within. 1 ,9%..21.—W. Columbia. 
V. Tricotor. Brod. § Sow. Z. P. 1835.—Beechey Zool. 
t.41.f.7. Ovate-elliptic, thickish with radiating rib-like decus- 
sated strize; with irregular brown interrupted spots disposed in 
rays ; dorsal edge subangulated in the middle: lunule small and 
heart-shaped : inside violet. 1;3,. .144.—C. America. 
V. Osscura. Brod. Z. P. 1835. Sub-globular, whitish, in- 
distinctly spotted, rough, with crenulated concentric lines; inside 
white. Diam. ='5.—Pacific. 
V. Curtensis. Brod. § Som. Z. P. 1835. Obovate, pale, 
with radiating rib-like strize which (especially the central) are flat- 
tened and decussated, particularly at the sides ; adorned with pale 
brown spots blotches and strigils; dorsal edge straightish, rather 
sloping, anteriorly subangulated; posterior side the shorter; lunule 
small and cordiform; inside whitish. 22..24. Chili. 
* * Inner margin quite entire. 
V. Lameuuata. Lam. 28.—W. S. t. 2. f. 1.—Reeve. t. 68. f. 3. 
—Del. t. 10. f. 6. | Oval, angulated at the anterior extremity, of 
which the slope is glabrous, with unequal ribs ; whitish with trans- 
verse remote ridges which are fringed on their ventral margin, on 
which side also they are vertically striated, and possess anteriorly 
canaliculated appendages ; whitish, the lunule oblong heart-shaped 
and somewhat lamellar.—Variety. Rather depressed, with the 
ridges narrower and without appendages. 22.— New Holland. 
V. Exatsipa. Chem. f.1974.—D. p. 170.—Lam. 29.—W. t. 7. 
J. 27.—£.. t. 264. f. 1. Oval heart-shaped rather depressed, uni- 
form chalky white both within and without with transverse elevated 
rather membranaceous strive: lunule oblong, anterior depression 
lanceolate. 24. .3.—Falkland Isles. 
‘V. Rura. Lam. 30. Oval tumid, rufous, with the margin 
white, transversely grooved, and very finely striated longitudinally ; 
