260 



rato-conaliculate towards which the upper margin is 

 suddenly inflexed ; mouth ovate, nearly half the whole 

 length, peristome thin, columellar lip rather inflexed 

 and terminating in a prominent plait on the columella ; 

 no umbilicus. 0,06... 0,02. Aberdeen. 



O. MARIONJE. Macg. Ah. p. 156. Ovate conical, 

 hyaline white, thin, transparent, rather glossy : whorls 

 five, finely plicated lengthways and delicately striated 

 spirally, the upper margin of each in the form of a 

 plaited rib ; mouth ovate, nearly half the whole length, 

 peristome slightly thickened, not reflexed on the pillar 

 but ending in a very slight plait behind the minute um- 

 bilicus. 0,04... 0,02. Aberdeen. 



0. ANNJE. Macg, Ab. p. 157. Oblong-turreted, 

 rather thick, opaque, glossy, destitute of markings, pure 

 white ; suture slight, whorls five, the body convex and 

 proportionably large, the rest flattened ; mouth ovate, 

 nearly a third of the entire length, peristome thin, its 

 columellar portion rather inflexed and terminating in a 

 small plait on the pillar opposite the small umbilicus. 

 0,04.. .0,14. Aberdeen. 



O. OBLONGA. Macg. Ab. p. 157. Oblong, subcy- 

 lindrical. very slightly tapering and ending in an obtuse 



