101 



XIX. VERTIGO. 



Shell conico-cylindrical, abruptly obtuse : aperture 

 contracted at the base, more or less angular, or 

 having the outer margin contracted, toothed in- 

 ternally ; the peritreme slightly margined and re- 

 flected, interrupted and truncate at top : operculum 

 none. 



81. Vertigo Secede. Aperture with seven or eight 

 laminar teeth : the peritreme acute and slightly 

 reflected. 



Turbo Juniperi. Montagu, p. 340. t. 12. f, 12. 

 Pupa Secale. Drajj. ;;. 64. t. 3.f. 49, 50. 

 Abida Secale. Leach, Mollusc, p. 165. 



Shell a quarter of an inch or rather more in length, 

 of a greyish-brown colour, opake, obliquely striate 

 longitudinally : spire composed of eight or nine 

 rounded volutions : aperture with seven or eight 

 laminar teeth ; two on the pillar-lip ; three on the 

 outer-lip, including the central one, and all of which 

 are visible on the back in the appearance of three 

 pale bands ; two on the interrupted part of the 

 peritreme, the outer one of which is more prominent 



