171 



projecting considerably, inner reflected and spreading 

 into a sharp angle elevated on the body whorl. Base 

 0,010. Devon. 



T. Nivosus. Mont. p. 326. P.p. 300. Lin. T. 

 8. p. 163. 'D.p. 889. Smooth, glossy, white, rather 

 slender and tapering to an obtuse point ; whorls five or 

 six, much rounded and deeply divided by the suture ; 

 aperture suboval ; inner lip and columella quite smooth 

 and even ; imperforated. 0,077.... 0,025. S. Devon, 

 very rare. 



TV NERITOIDES. C7L/.1684. An T. NERITOIDES. 

 Lam. 27.? T. RETTJSUS. Lam. 28. Slain. Faun. 

 Franc, t. 12. /. 6. NERITA LITTORALIS. Lin. 1253. 

 Lut. t. 607. /. 39,40, 41, 42, 44. Lis. An. Ang. 

 t.Z.f. 11, 12, 13. Knorr. 6. t. 23. /. 8. Pen. 4. p. 

 141.*. 87. /. 143. D.p. 989. JP. p. 318. Da. 

 Cos. f.S.f. 13 to 16. Dora, t. 20. /. 2. Lin. T. 8. 

 t. 6. f. 16. Dor. Cat. p. 57. t: 16./. 15 to 16. and 

 t. 20. /. 2,3. Mont. p. 467. Semiorbicular, thick, 

 strong, smooth, plain light or orange yellow red or 

 brown, sometimes prettily mottled or chequered brown, 

 or yellow and white and rarely banded ; whorls four or 

 five, the body whorl very large, the rest small and 

 lateral (sometimes quite flat, sometimes rather produced) 



H2. 



