51 



MELANIA ANNULIFERA. 



Plate VIII.— M^. 2. 



DESCRIPTION. 



Shell elevated-subconical, with flattened whorls 

 and elevated distant ribs, alternately smaller; about 

 five on the body whorl and three on the adjoining 

 one; suture obsolete; colour generally blackish exte- 

 riorly and dark purple within. 



OBSERVATIONS. 



Inhabits with the preceding species, from which it 

 differs in being less ventricose, and having the ribs 

 plain; the aperture is shorter than in the preceding. 



MELANIA SALEBROSA. 

 Plate lY.—Fig. 5. 



DESCRIPTION. 



Shell short, suboval, thick, ventricose, with a series 

 of very elevated nodes on the shoulder of the body 

 whorl, and generally two series of smaller nodes be- 

 neath; spire very short; apex much eroded; aperture 

 about half the length of the shell, contracted; within 

 purplish; columella with a callus above, and another 

 near the base. 



