present the appearance of two undulated lines intersecting 
each other. 4...¢ Aberdeen. 
Buia Canpipa. Macg. Ab. p. 189.—DIAPHANA 
C. Brown Ill. Con. t. 38. f. 13, 4.—Broadly ovate, 
thin, semitransparent, glossy white; apex rather pro- 
minent, obtuse, two very small volutions being apparent, 
but with a slight scrobiculus ; aperture wide, ovate- 
oblong, acute behind, the columellar margin a little 
thickened and reflexed, outer margin thin. Aberdeen 
t...0,14, 
B.Punctora Johnston in Edin. Phil.J. 19. Oblong- 
oval, opaque, white, thickish, marked with numerous 
close, transverse, punctured strive; apex with a very 
narrow perforation 0,33. Berwick. Shape of B. 
Ampulla of Montague. 
B. Miyota. Macg. Aber. p.334.—Diarnaya M, 
Brown. Ill. Con. t. 38. f. 7,8.—Ovate cylindrical, of 
two very thin transparent hyaline white glossy 
turns, nearly smooth ; broadly truncate above, with a 
wide sutural grovve, and a rounded mammillation which 
protudes a little; mouth oblong, anteriorly wide and 
rounded, moderately narrowed behind, extending the 
whole length of the shell : outer lip projecting conside- 
