160 

 * Umbilicated; 



T. MAGUS. Lin. 1228. D. p. 774. Lam. 21. 

 List. t. 641. f. 32. Knorr. 6. . 27. /. 4. Mart. / 

 1656. Pm. 4.^). 127, t> SO./. 107. Dow. *. 8./ 1. 

 Mont. p. 283 Lin. T. 8. jp. 151. Dor. Cat. p. 

 48. . 16. /. 1. F. p. 321. T. TUBERCULATUS. Da 

 Cos. p. 44. . 3. f. 1. Depressed-conical, thickish, 

 with indistinct spiral striae, whitish with confluent pur- 

 plish red radiating streaks ; body whorl somewhat 

 flattened and subtuberculated above, a raised spiral 

 striae near the base of each of the six whorls , base 

 slightly convex, umbilicus large and deep. Breadth, 1 . 

 Common. 



T. UMBILICATUS. Pen. 4. p. 126. Mont. p. 286. 

 Ch.f. 168o. Da. Cost. t. 3./. 4, Dor. Cat. t. 

 16./. 7,8. T. CINERARIUS. Don. 3. t. 74., three 

 middle figures. T. OBLIQUATUS. D. p. 779. Strong, 

 depressed, rounded at the top, the apex depressed and 

 not pointed ; volutions five and nearly even, suture 

 fine ; white or greenish with longitudinal purplish 

 waved or ziczac lines and obsolete spiral stria3 ; aper- 

 ture compressed, angulated umbilicus large and per- 

 forated to the apex. &... . On Fuci, near low water 

 mark , very flat when youny. 



