110 TESTACEOUS MOLLUSCA. 
t. 67.— List. t. 336. f. 173.—Knorr. 6. t. 10. f. 1.—V. Reticu- 
tata. W. t. 8. f. 66. Rounded heart-shaped, strong, gibbous, 
whitish with brown rays, speckled near the beaks and stained with 
the same colour on the anterior side, which is angulated and its 
edge almost direct and straight ; decussated by tolerably close-set 
fimbriated membranaceous lamelle and crowded obtuse radiating 
riblets ; ventral edge arcuated but not rounded, ligamental sloping ; 
lunule heart-shaped and projecting: one of the lips overlapping 
the base of the anterior depression: within with an anterior purple 
stain. 3.—Jndian Ocean. 
V. Lisrert.—Dostina L. Gray in Analyst. 1838.—V. Pugr- 
pera. Var. 2. Lam.—HE. t. 278. f. 2.—V. Puerpera. W. t. 
10. f. 67.—Young, V. Reticutata. Lam (not Lin.) Closely 
resembling the last, but the membranaceous lamellz closer, finer, 
and more fimbriated, especially on the anterior side, which is 
not stained with brown, nor is its margin straight : ligamental edge 
scarcely at all sloping: inside not stained with purple. 3.— 
Indian Seas.—Colour usually white with ferruginous zigzag 
markings. 
V. Pyemea. Lam. 3. Small, ovate, rather depressed, with 
curled and wavy transverse ridges, somewhat decussated, whitish 
spotted with brown and rufous: anterior slope lamellar, beaks rosy. 
2.—W. Indies. 
V. Reticutata. Lin. Mus. Ulr. p. 503.—D. p. 188.—V. 
Corsis. Lam. 4.—Ch. f. 382, 3.—E. t. 276. f. 4.— List. t. 335. 
f. 172. Heart-shaped, slightly rounded, tumid, white, with pale 
chesnut or brownish spots often disposed in rays, and concentric 
rather depressed, somewhat granular ridges which are decussated 
by longitudinal raised ribs ; the profound and wrinkled lunule 
defined by a groove; white within, with the margin indistinctly 
erenulated and the hinge saffron-coloured or stained with rose. 
2..24.—Indian Ocean. 
V. Crenvnata. Lam. 5.—D. p. 189.—W. ¢t. 8. f. 68.— 
V. Crenata. Gmel. 3279.—Ch. f. 385. Heart-shaped, with 
transverse moderately elevated membranaceous ridges, which are 
crenulated by indistinct longitudinal striz, whitish with tawny 
spots disposed in rays, and the lunule brown and widely heart- 
shaped; uniform white within and the posterior margin strongly 
crenulated. 13.—India. 
V. Rertexa. Mont. sup. p. 40. and 168.—Turt. B.t. 10.f. 1, 2. 
—V.Discina. Lam.6.—Phil. p. 42.—B1.t. 75. f. 6.—V. Rusre- 
Rucci. Payr. f. 26, 7,8. Rounded obovate, sub-cordate, com- 
pressed, anterior slope excavated, very pale flesh-colour with obsolete 
red spots forming indistinct rays; concentric ridges posteriorly 
rather depressed, rising into thin waved and deflected plates an- 
teriorly: lunule elongated heart-shaped, wrinkled. 12.— Kurope. 
V. Verrucosa.* Lin. 1130.—D. p. 163.—Lam. 7.—Ch. f. 
