114 CONCHOLOGY. 



A. columnaris. The columnar Achatina. PI. 18, fig. 3, 

 Species evidently turriculated. 



9. Succinea. Three species. 



A terrestrial shell, though the animal that inhabits it is 

 almost amphibious ; it greatly resembles the Bulimus, but is 

 easily distinguished by never having the lip reflected or 

 thickened. 



Shell very thin, translucid, ovate-oblong, with a conical- 

 pointed spire formed of a small number of whorls ; aper- 

 ture very large, oval, oblique ; the edges disunited ; the right 

 always acute, the left acute and arched, formed by the colu- 

 mella. 



Succinea cucuUata. Succinea amphibia. 



S. oblonga. 

 S. amphibia. The amphibious Succinea. PI. 24, fig. 4. 

 Species elongated, very thin and pellucid ; spire short ; 

 aperture expanding ; amber colour. 



10. Auricula. Fourteen species. 



This genus was so called from the resemblance which 

 the aperture bears to the shape of an ear ; many of the spe- 

 cies are named from their resemblance to the ears of par- 

 ticular quadrupeds. It is a land-shell, found chiefly in the 

 East and West India Islands. 



Shell thick, solid, more or less smooth, oval, oblong, spire 

 short and obtuse ; aperture entire, oblong, enlarged, ear- 

 shaped, much contracted behind ; edges disunited ; right lip 

 sometimes thick and outwardly reflected ; the left or colu- 

 mella with one or more teeth or thick callous plaits. 



Auricula Midae. Auricula scarabaeus. 



A. Judae. A. bovina. 



A. Sileni. A. caprella. 



A. leporis A. myosotis. 



A. felis. A. minima. 



A. Dombeiana, A. nitens. 



A. coniformis. A. monile. 



