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 Secale. Aperture with seven or eight 

 laminar teeth : the peritreme acute and slightly 

 reflected. 



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

 Pupa Secale. Drap. p. 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 



