MELANIA.— Plate XXX. 



gibbous towards the base, very thick, intense-black, j Ilab. Brazil, 

 whorls very few, slopingly convex, very closely 

 grooved throughout, ridges obsoletely striately cre- 

 nulated, last whorl thickly ascending at the aperture; 

 aperture ovate, broadly siuuated at each end. 

 Hob. Eiver Maranon, North Brazil. 



A very characteristic new species, peculiarly distin- 

 guished by the bold, stoutly gibbous growth of the last 

 whorl, and very close spiral grooving. 



Species 202. (Mus. Cuming.) 



Melania nicotiana. Mel. testa elongato-turritd, soli- 

 diusculd, fulvo-olivaced, aiifractibus subuumerosis, de- 

 clivi-plauatis, undique spiraliter crebri-sidcatis, can- 

 centrice tenuiplicatis, plicis subobsolelis, versus apicem 

 distinctis ; aperturd parvinscidd, parum sinuatd. 



The cigar Melania. Shell elongately turreted, rather 

 solid, fulvous-olive, whorls rather numerous, slopingly 

 flattened, closely spirally grooved throughout, con- 

 centrically finely plicated, plaits rather obsolete, dis- 

 tinct towards the apex; aperture rather small, but 

 little sinuated. 



The sculpture of this species is quite distinct from the 

 other two in this Plate of similar form. The surface is 

 closely spirally grooved throughout, and the concentric 

 plaits are very irregular, becoming less defined as they are 

 more removed from the apex. 



Species 203. (Fig. a, b, Mus. Cuming.) 



Melania Batesii. Mel. testa obeso-ovald vel eloiujald, 

 crassiusculd, anfractibus declivi-convexis, lavigatis, 

 obscure superficialiter spiraliter sulcatis ; aperturd 

 ovatd. 



Bates's Melania. Shell stoutly ovate or elongated, 

 rather thick, whorls slopingly convex, smooth, ob- 

 scurely superficially spirally grooved ; aperture ovate. 



Hab. Mouth of the Amazon ; Bates. 



Distinguished chiefly by the simplicity of its characters. 

 The grooving presents a curious contrast with that of the 

 species figured above it, being quite superficial. 



