oI 
* * Margin quite entire. 
V. Supstrrata. Mont. Sup. p. 48. ¢. 29. f. 6.— 
Pen. 4. p. 211.—Turt. C. D. p. 245.—Turt. B. p. 
152.—F. p. 448.—Oval, thin, semitransparent, white, 
with transverse wrinkles and obscure waved longitudinal 
strie; beaks nearer to one end, small, turning a little to 
one side ; anterior tooth long and oblique. 2...0,60. 
Frith of Forth. 
V. Aenea, Turt. C. D.-p. 248. f. 20.—Turt. B. t. 
10. f. 7. p. 152.—F. p. 449.—Oval, tapering and 
elongated anteriorly, posteriorly rounded ; white, under 
ashining bronzed skin, convex, with regular close-set 
transverse striz and minute longitudinal lines; beaks 
much pointed curved and posterior, lunule elongated 5 
teeth strong, two cloven in one valve, and one in the 
other, 1...1¢. Dublin Bay. 
V. Sarniensis. Turt. B. p. 153. ¢. 10. fi 6.— 
V ENERUPFISS. F.. p. 462,—Tnst. t. 385. f. 232.—Oval, 
anteriorly truncated and tumid, thick, convex,yellowish 
white, mostly marked with numerous red or purplish 
ziczac lines often disposed in interrupted rays (rarely 
uniform chocolate or fawn color); with numerous 
rounded transverse striz not becoming broader ante- 
riorly ; beaks prominent, recurved ; lunule purple and 
