VERTIGO. 81 



t eeth six to nine, of a reddish brown colour ; umbilicus dis- 

 tinct. 



Found in moist places under logs, stones, among 

 moss, and on water plants, as well as in elevated 

 situations, in many parts of the British Isles. 



Young specimens have only two denticles, one on 

 the pillar and one at the base of the penultimate 

 whorl. 



2. Y. LILLJEBOEGII l (after the Swedish naturalist, 

 Lilljeborg). 



Barrel-shaped, very thin and glossy, light horn-colour ; 

 whorls four and a half, very tumid ; spire short, blunt ; 

 suture very deep ; mouth semi-oval, constricted at the outer 

 edge ; teeth four ; umbilicus distinct. 



Dr. Jeffreys found this species in the west of Ireland, 

 and figured and described it in his work under the 

 name of V. Moulinsiana, from which it is doubtfully 

 distinct. 



As to the differences of this from the last species and 

 V. pygm&a I cannot do better than quote Dr. Jeffreys, 

 who says : " This species differs from V. antivertigo 

 in being larger, more ventricose, and of a much lighter 

 colour, in the mouth and outer lip not being contracted, 

 and especially in the number and position of the teeth, 



1 Identical with V. Moulinsiana of Dr, Jeffreys' " British Conckology." 



