51 
MELANIA ANNULIFER A. 
Plate YII L—Fig. 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. 
O BSE RVATIONS, 
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 IV.-— -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. 
