19 



/ 2.Turt. D. p. 78. Lin: T. 8. p. 24: Wood. G: 

 C: p. 46. D. p. 18. White, somewhat conical, nearly 

 closed at the top and rather spreading at the base; with 

 numerous, nearly equidistant, strong, rounded ribs, 

 radiating from the top to the base. i. W. Coast of 

 England, Wales, and Ireland. 



B. CLAVATUS, Ellis Zoop. p. 198. t. 15. /. 7. 8. 

 Mont. p. 10. Dor: Cat. p. 25: t. I./. 6. B. FISTU- 

 LOSUS. Erug.p: 166. LEPAS. C. Wood. G. C. p. 45. 

 t. 7. f. 2. L. ELONGATUS. Ch. f. 838. D. p. 17. 

 Turt.D.p. 77. L. BALANOIDES. var. Pen. 4. ^?. 73. 

 t. 37. /. 6 A. Don. *. 36./. 1. Elongated-clavate, 

 broader at the top than at the base ; dirty white ; valves 

 three wide and three narrow, wrinkled Jongitudinally 

 and faintly striated transversely : operculum quadri- 

 valve, obliquely striated. 2. f. Sandwich, Weymouth. 

 Not improbably an elongated variety of RUGOSUS. 



B: CONOIDES. Mont. p. 12. LEPAS C.Don, t. 30. 

 /. 3. Lin'.T.&.p. 24.Turt. D. p: 77. Wood. G. 

 C.p. W.D.p. 18. An B. L^vis. Brug ? C oni- 

 cal, with smooth valves, pointed at the apex : aperture 

 very small. Diam. f. On Anatifa Lcevis. Donovans 

 figure is purplish white, and whether from the style of 

 engraving or not, appears reticulated by longitudinal 

 and fine transverse striae. 



