TRIBE CONCHACEA. Ill 



299, 300. -List. L 284./. 122.— Don. t.44,—B. t. 4.f. 7—W. 

 t. 7 f. 12. Rounded heart-shaped, tumid, whitish often tinged 

 with' red, strong, with coarse transverse ribs which become warty 

 at the extremities, and indistinct longitudinal striae which are usually 

 apparent at the umbones ; anterior slope more or less spotted on 

 one side : lunule heart-shaped and wrinkled : white within. Di- 

 ameter If. — Europe. 1 



V. Rugosa. Gmel. 3276. — Lam. 8. — V. Dysera. var. /3. 

 Lin. 1 130.— V. Rigida. D. p. 164.— Ch.f. 303.— E. t. 273. /. 

 4.— List. t. 286. f. 123.— W. t. 7. /. 13. Rounded heart-shaped, 

 very ventricose, with numerous transverse thin entire membranaceous 

 ridges, whitish, irregularly stained with spots or short angulated 

 streaks of pale brown ; anterior slope in one valve glabrous, lunule 

 heart-shaped but very short and broad : within uniform white, 

 with the rudiments of a fourth tooth and its receptacle. 2^. — 

 Indian foecis. 



V. Casina.* Lin. 1130.— D.p. 165.— Lam. 9. — Ch.f. 301,2. 

 — W. t. 7./. 14.— Don. t. 149.— Turt. B. t. 3./. 1. Rounded 

 heart-shaped, slightly compressed, whitish or very pale fulvous, 

 becoming reddish at the beaks, and on the posterior side whose 

 depression is elongated heart-shaped ; marked with thin unequal 

 transverse entire ridges which curve towards the beaks ; white 

 within. Diameter 2. — Europe. 



V. Crebrisulca. Lam. 10. — E. t. 276. f. 1. Rounded 

 heart-shaped, whitish with rufous spots and numerous transverse 

 obtuse ribs, which are almost elevated into ridges on the anterior 

 side ; lunule oblong heart-shaped, almost lamellar, rufous with a 

 small white spot at its base ; the anterior slope is sunken, linear, 

 margined with unequal tubercles, and often lettered on one side, 

 lj. — Indian Ocean. 2 



V. Plicata. Gmel. 3276.—D. p. 162.— Lam. 11.— W. t. 7. 

 f m g.—Ch.f. 295, 6, 7.—E. t. 275./. 3.— Reeve, t. 68. f. 6. Some- 

 what heart-shaped, angulated towards the anterior end, rather 



iV. Subcordata. Mont. t. 3. /. 1.— W. t. 7. f. 16. The 

 copy we have made from this figure much resembles the young of 

 Verrucosa. We have not, however, seen authenticated specimens. 



2 A species bearing some slight resemblance to this shell, but a 

 specimen of which we have not been fortunate enough to procure, 

 (a copy of Chemnitz's figure is given,) is the V. Cincta. Ch. f 

 387-— D. p. 190.— W. t. 8. f. 70. Triangular heart-shaped, 

 ventricose, with broad transverse ribs and the interstices crenulated, 

 white variegated with reddish-brown angulated spots ; lunule cor- 

 diform : inside white stained with purple under the umbones, 

 margin crenulated. 



