HARFA. DOLIUM. 107 



resembling H. ventricosa; but the ribs are narrow, 

 distant, and marked with brown transverse stripes 

 in pairs; spire rather exserted. If. W. S. 4. 24. 



DOLIUM. 



T?dn, ventricose, inflated, generally sub-globular, 

 rarely oblong, transversely banded; right lip 

 toothed or crenate through its whole length; 

 aperture oblong, notched below, 



D. GALEA. Ovate-globose, very ventricose 

 and large, umbilicated, thin, whitish fulvous; ribs 

 rounded, with smaller alternate ones above ; whorls 

 channelled near the sutures. 8|. W. 22. 2. 



D. OLEARiuM. Ovate -globose, ventricose, 

 thin, pale fawn-colour, usually spotted with Avhite 

 and brown ; ribs transverse, broad, and flattened, 

 separated by an impressed furrow ; sutures chan- 

 nelled. 4i. W. 22. 1. 



D. MACULATUM. Ovate - globosc, inflated, 

 thin, white, with convex distant ribs, spotted 

 with red or tawny ; the interstices divided by an 

 elevated stria. 4f . W. 22. 6. 



D. POMUM. Ovate, turgid, thickish, white, 

 mottled with tawny yellow; the ribs rather round- 

 ed, broad, and crowded ; spire short ; mouth nar- 

 rowed, toothed on both sides ; lip thickened and 

 margined. 2\. W. 22. 4. 



D. PERDix. Ovate - oblong, inflated, thin, 

 reddish fulvous, with several rows of lunated 



