166 



nearly smooth, whorls five, the body occupying nearly 

 two-thirds of the shell, apex acute ; aperture lunated, 

 outer lip considerably projecting, piilar lip smooth flat, 

 somewhat spreading and as well as the corneous oper- 

 culum and the interior dark purple, i...^. S. Devon, 

 variety. Blotched or irregularly streaked with white 

 or rufous on the upper part of the body whorl. 



T. RUDIS. Mont. p. 304. Don. t. 33. f. 3. Lam. 

 29. F. p. 298. D. p. SlS.-Lin. T.S.p. 159. t. 4. 

 /. 12,3. Dor. Cat. t. IS.f. 6. Ovate, thick, strong, 

 with five ventricose whorls well defined by the suture ; 

 yellowish grey or brown, usually striated transversely ; 

 spire rather prominent and pointed ; aperture subor- 

 bicular, inner lip thick, a little reflected. The very 

 \ young, deep brown and more slender, f . Common. 



T. TENEBROsus.MbwJ.jp. 303. Turt. D. p. 197. 

 P.p. 298. D. p. 817. Dor. Cat. p. 49. t. 18. f. 

 15. Strong, short, conic, nearly as broad as long, 

 dark chocolate with five ventricose spires, the body 

 whorl occupying about half the length of the shell, 

 apex obtusely pointed ; aperture suborbicular ; outer 

 lip thin, dark purplish brown within. J. Kent, Dover, 

 not uncommon. 



