TRIBE CONCHACEA. 115 
lateral, uniformly whitish, with crowded transverse grooves : lunule, 
lanceolate. 14. 
V. DomBet. Lam. 21. Rounded ovate, thick, rufous, with 
flattened ribs decussated by transverse strie, and the lunule ovate ; 
white within with very irregularly impressed dots towards the 
centre. 132.—Peru— Bears a strong resemblance to C. Punctata, 
but besides the difference of hinge and colouring, is less rounded 
and more tumid. 
V. MercenariaA. Lin. 1131.—D. p. 176.—Lam. 22. Ch. f. 
1659, 60.—H. t. 263.—W. t. 7. f. 40. Obliquely heart-shaped, 
solid, with rough irregular concentric strie, straw colour ; lunule 
heart- -shaped: interior white with a large violet stain chiefly visible 
on the anterior side. 23..33.—N. America. 
V. Lacorus. Lam. 23. ‘Triangular heart-shaped, white with 
fulvous spots and stained with rose color within ; with raised 
transverse crowded ribs which are crenulated on the side nearest the 
ventral margin, and almost become ridges at the anterior extremity. 
13.—New Holland. 
*v. Gatuina.* Lin. 1130.—D. p. 168.—Lam. 24.—-W. t. 7.f. 
23.—Turt. B. p. 149. t. 9. f. 2.—Ch. f. 308.—List. t. 282. 
Jf. 120.—V. Srriatuta. Don. t. 68. Triangular heart-shaped, 
with numerous glossy sloping transverse ridges, which seem cre- 
nulated from being crossed by crowded fine rufous lines ; whitish or 
pale brown with more or less distinct darker rays, the beaks much 
recurved, and the slopes nearly smooth. 1..141.—N. Hurope. 
V. Gauumnuna. Lam. 25.— Del. t. 10. f. 1.—V. Cosrunata. 
W.S.t. 2.7.15. Elliptic, heart-shaped, moderately convex, with 
short longitudinal interrupted rufous lines (sometimes obsolete 
rays), and transverse elevated sloping grooves, which become striz 
at the anterior end, whose slope is rather short and somewhat linear : 
lunule ovate : interior stained with purplish violet. 141.— New 
Holland.— Closely resembling Gallina. 
V. Pectinuta. Lam. 26.—Del. t. 10. f. 3. Rounded trian- 
gular, pale fulvous with longitudinal crenated radiating grooves : 
lunule ovate : Cherbourg,—not unlike the shell figured in Lin. 
Pesto. 8: t5 2052 
V. Sevamosa. Jin. 1133.—D. p. 190.—W. ¢t. 8. f. 71.— 
CytHEereA 8S. Lam. 75.—Ch. f. 335. Triangular heart-shaped, 
ventricose but compressed at the produced and beaked anterior 
extremity the slope of which is striated ; reddish white variegated 
with darker lines on the posterior slope and marked with longitudinal 
grooves which are cancellated by concentric ones: lunule rounded 

1V. Suncata. Jam. 27. is a Crassina. 
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