TRIBE CONCHACEA. 127 
V. Japonica. Gmel. 3279.—D. p. 183.—Ch. f. 364. Subcor- 
date, posteriorly short, anteriorly produced and angulated, strongly 
and densely grooved transversely ; variable in colouring, but usually 
whitish with angulated dark (brown more or less purplish) markings, 
forming a kind of network, and frequently three rays: lunule oblong 
ovate, and stained near the beaks with purplish; anterior slope 
elongated, smooth, livid, violet : inside white, with purple stains on 
the hinge margin : hinge with the central tooth bifid in one valve, 
the anterior so in the other. 1}..2.—Japan, $c. 
V. Srriata. Chem. f. 365, 6.—Gmel. 3279. —W. t. 7. f. 56. 
—D. p.183.—An. H. t. 267. f.3? Subcordate, oval, inequi- 
lateral, anteriorly angulated, the ligamental edge sloping greatly ; 
ventral edge rounded, subundulated, fulvous (sometimes with obso- 
lete linear markings and very obscure rays), the transverse subundu- 
lated strie at the beaks becoming grooves below: lunule ovate 
oblong, large and not coloured ; within with an orange spot beneath 
the umbones, elsewhere white, margin smooth. 14..24.— Nicobar 
Isles. 
V. Paupercuta. Chem. 11. p. 227. t. 202. f. 1977.—D. p. 
172.—W. t. 7. f. 31. Ovate subcordiform, smooth, with reddish 
brown or bluish dots and veins on a yellowish ground ; the retuse 
oval oblong anterior depression and the heart-shaped impressed 
lunule tinged with violet. &. .11.—Coromandel.— Having some- 
what the shape of Fuexvosa.! 
V. Paryracea. Gray. Ann. Phil. 25.—W. S. t.2. f. 8. Ovate, 
gibbous, paperlike, thin, pellucid, white, subantiquated ; umbones 
concentrically grooved ; hinge margin anteriorly impressed. —New 
Genus ? 
V. Zevanica. Quoy. Ast. t. 84. f.5,6. Ovate heart-shaped, 
turgid, longitudinally ribbed, with ridge-like transverse striz, livid 
brown; lunule obsolete : within yellowish, anteriorly with a violet 
stain, the hinge with two of its three teeth cleft.—New Zealand. 
V.InrERMEDIA. Quoy. Ast. t. 84. f. 9,10. Transversely ovate, 

1 T possess a shell with many of the characteristics of this rather 
obscure species. Should it not prove to be identical, I have every 
reason to believe it to be undescribed. Ovate sub-cordiform, very 
convex, rather thick, anteriorly produced and somewhat beaked, 
posteriorly short and obtusely rounded, ventral edge arcuated and 
anteriorly incurved : smooth, glossy, veined with dark ashy dots, 
and often two or three rays on a lighter ground: inside white, with 
usually a tinge of scarlet beneath the umbones, and always with 
dark purple spots beneath the depressions, which externally are 
sunken, the anterior lanceolate, the posterior oval oblong: margin 
entire. §..14.—Allied to Opima of Lamarck. 
