TRIBE CONCHACEA. 127 



V. Japonica. GmeL3279.—I).p. 183.— Ch.f. 364. Subcor- 

 date, posteriorly short, anteriorly produced and angulated, strongly 

 and densely grooved transversely ; variable in colouring, but usually 

 whitisli 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. Striata. Chem. f. 36.5, 6.—Gmel. 3279.— TT. t. 7. f. 56. 

 —D. p. 183.— An. U." t. 267- / 3 ? Subcordate, oval, inequi- 

 lateral, anteriorly angulated, the hgamental edge sloping greatly ; 

 ventral edge rounded, subundulated, fulvous (sometimes with obso- 

 lete linear markings and very obscure rays), the transverse subundu- 

 lated strise 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. If. . 2^. — Nicobar 

 Isles. 



V. Paupercula. 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, -f. . 1^. — Coromandel. — Having some- 

 what the shape o/Flexuosa.i 



V. Papyracea. Gray. Ann. Phil. 25.— W. S. t. 2./. 8. Ovate, 

 gibbous, paperlike, thin, pellucid, white, subantiquated ; umbones 

 concentrically grooved ; hinge margin anteriorly impressed. — New 

 Genus ? 



V. Zelanica. Quoy. Ast. t. 84. f. 5, 6. Ovate heart-shaped, 

 turgid, longitudinally ribbed, with ridge-like transverse striae, livid 

 brown ; lunule obsolete : within yellowish, anteriorly with a violet 

 stain, the hinge with two of its three teeth cleft. — New Zealand. 



V. Intermedia. Quoy, Ast. t. 84. y. 9,10. Transversely ovate, 



1 I 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. ^..13^. — Allied to Opima of Lamarck. 



