171 
projecting considerably, inner reflected and spreading 
intoa sharp angle elevated on the body whorl. Base 
0,010. Devon. 
T. Nivosus. Mont. p. 326.—F. 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. 
T. Nertrorpes. Ch.f.1684.—An T. NERITOIDES. 
Lam. 27,?—-T. Retusus. Lam. 28.—Blain. Faun. 
France. t. 12. f. 6—NeErita Litrorauis, Lin. 1253. 
—Inst. t. 607. f. 39, 40, 41, 42, 44.—Ins. An. Ang. 
¢.3. f. 11,12, 13.—Knorr. 6. t. 23. f. 8.— Pen. 4. p. 
141, ¢. 87. f. 143.—D. p. 989.—F. p. 318.—Da. 
Cos. t.3.f. 13 to 16—Don. t. 20. f. 2.—Lin. T. 8. 
t. 5. f:15.—Dor. Cat. p. 57, t: 16. f. 15 to 16. and 
t. 20. f. 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 ) 
H 2, 
