90 



giving the end of the pillar the resemblance of a 

 tooth ; the outer margin thin, not reflected nor 

 forming an umbilicus. 



Pfeiffer in his delineation of this shell, part ] . tab. 3. 

 Jig. 8, 9. has erroneously exhibited the aperture 

 as quite rounded at the base, without the least de- 

 truncation of the pillar, thereby fixing it in the 

 genus Bulimus. 



Among the roots of trees, at the base of limestone 

 rocks. 



J72. ACHATINA octona. Shell smooth, polished, 

 somewhat cylindrical white horn-colour, with seven 

 or eight roundish volutions ; the lower one not 

 half so long as all the rest. 



Bulimus octonus. Lam. vi. ii. p. 124. 



Helix octona. Mont. Turt. Diet. 



Linn. Trans, viii. t. 5.f. 10. 



Shell half an inch long, with seven or eight raised 

 and rounded volutions : aperture roundish, termi- 

 nating like the last, which fixes it in this genus. 



Inserted as British, on the authority of Dr. Pulteney, 

 but a very doubtful native. 



