92 
heart-shaped; inside white, purple or greenish; two of 
the teeth bifid. 2. Guernsey. 
V. Sinvosa. Pen. 4. p. 218. ¢.58. f. 4.—Mont. p. 
120.—Lia. T. 8. p. 90.—Turt. C. D. p. 248.—Turt. 
B.p. 154. ¢. 10. f. 9—F. p. 449.—Roundish oval, 
subequilateral, with a longitudinal sinuosity from the 
beaks, whitish, with flat transverse striz and obscure 
longitudinal ones; lunule heart-shaped, subcarinate ; 
inside rich glossy yellow ; two of the teeth in one valve 
bifid, one so inthe other. 2. Dublin Bay. 
V. AurREA. Pen. 4. p. 212. ¢. 60. f. 1.—Mont. p. 
129.—Iin. T. 8. p. 90. ¢. 2. f. 9.—Dor. Cat. p. 36. 
t. 13. f.3.—D. p. 207.—Lam. 56.—List. t. 404. f. 
249.—Turt. C. D. p. 247.—Turt. B. p. 155. t. 9. f. 7, 
8.—F’. p. 449.—Oval heart-shaped, tumid in the mid- 
dle and sloping to each side, anteriorly more produced, 
closely striated transversely, and very obscurely so 
longitudinally, lighter or darker yellow with blackish 
brown or bluish ziczac lines or stripes, variously dis- 
posed and often confluent; lunule broad ; middle tooth 
cloven. 1...14. Devon and Cornwall. 
V. Vireinga. Lin. 1136.—D. p. 207.—Lam. 57. 
—Ch. f. 457,—Pen. 4. p. 212. ¢.58. f.5.—Moné. p. 
