VERTIGO. 85 
seven (two on the body, two on the columella, two or 
three inside the outer lip). 
This species is found in many parts of England and 
Treland, but it is local and rare. It frequents similar 
situations to the others. 
8. V. ANGUSTIOR (narrower). 
Of the same form, but narrower than the last species, 
glossy, semi-transparent, horn-colour; closely striate in the 
line of growth; whorls four and a half, the penultimate 
being the broadest; mouth sub-triangular, and narrowed 
by the strong constriction of the outer margin; teeth four 
to five (two on the body, one on the columella, one inside 
the outer lip, which is thickened and reflected) ; wmbilicus 
indistinct. 
This species is very rare and local, occurring in a 
few localities only. In England at Bristol, Battersea 
Fields, and in Yorkshire; in Wales at Singleton (near 
Swansea), Tenby, Milford, and in some of the southern 
and western counties of Ireland. I have also found it 
abundantly on the sand-hills at the mouth of the River 
Bann. 
The following table of comparison may be useful to 
assist identification :— 
