142 
B. Ostusa. Mont. p. 223. t. 7. f.3.—F. p. 293. 
—(Walk.t. 3. f. 62.)—ILin. T. 8. p. 128.—Dor.f Cat. 
p. 44. ¢. 18. fi. 14.—D. p. 497.—(Adams. t. 14. f. 
28.)—Moderately strong, subcylindrical, opaque, white, 
longitudinally wrinkled; apex convoluted, obtuse,whorls 
four or five, very little produced; aperture nearly the 
length of the shell, narrow and rather more compressed 
in the middle, dilated at the base ; iuner lip thickened, 
smooth, white. 0,20...0.10. Kent and Devon. 
B. Cytinpracka. Pen. 4. p. 117. t. 59. f. 85.— 
Don. t. 120.—Mont. p. 21.¢. 7. f. 2.— list. t. 714. 
J. 70.—F. p. 293.—D. p.496—Dor. Cat. p. 48. t. 
18 .f.22.—Cylindrical, narrow, involuted, white, semi- 
transparent: smooth, umbilicated at the apex, aperture 
narrow, linear, slightly dilated at the base; outer lip 
straight; pillar lip with an indistint fold.  4...0,20. 
S. Coasts. 
_B. Ausa. Turton Z. J. 2. p. 364. 4.13. f. 6.—F. 
p. 294.—Ovate-oblong, slightly striated longitudinally, 
white, unspotted, the vertex umbilicated, three transverse 
punctured striz at each extremity. 3- British Channel. 
Tripe.—LAPLYSIAN. 
