176 
C. Parva. F. p. 306.—Da Cos. p. 104.—Turso 
P. Mont. p. 310.—D. p. 857.—(Walk. t. 2. f. 43.) 
Lin. T. 8. p. 171.—Dor. Cat. p. 50. t. 19. f. 4.— 
T. Lactrevs. Don. t. 90.—T. revs. Lin. T. 3. p. 
66. ¢. 13. f. 29 and 30.—Strong, conical, coarsely 
ribbed longitudinally, variable in coloring. being glossy 
white, dark chesnut or pale rufous (sometimes varie- 
gated, or dark with the ribs white); ribs strong and dis- 
tant, from nine to eleven on the body whorl; aperture 
suborbicular, outer lip strengthened by a rib. 3. Com- 
mon in drift sand, Kent, Devon, Sc. &e. 
C. Mareinata. F. p. 306.—Turso M. Mont. 
Sup. p. 128.—Wern. Mem. 1. p. 406. t. 8. fi 13.— 
T. Arcuatus. D. p. 859.—Subcylindrical, white, 
stroug, finely striated spirally; the whorls six, with 
about as many longitudinal ribs which become obsolete 
at jhe suture’; aperture patulous. #., breadth 4. less, 
Guernsey and Dunbar, rare. 
C. Conrrera. F. p. 306.—Turzso C. Mont. p. 
314. ¢t. 15. f. 2.—D. p. 859.—Iin. T. 8. p. 173,— 
Dor. Cat. p. 50. t. 19. f. 6.—Strong, taper, white, 
the apex rather obtuse; whorls six, each with about 
twelve longitudinal undulated ribs, interrupted only by 
a fine suture, the interstices at the top of the whorls 
