MELANOPSIS.— Plate III. 



laevigata, castaneo-fuscd, suturis albidis, anfractibus 

 sex, declivi-convexis, delude gibbosiusculis ; aperturd 

 subanguste ovatd, superne sinuald, columella supra 

 dense callosd, infra curvatd. 



The gnawn Melanopsis. Shell ovately conical, solid, 

 smooth, chestnut-brown, sutures whitish, whorls six, 

 slopingly convex, then rather gibbous ; aperture rather 

 narrowly ovate, sinuated at the upper part, columella 

 thickly callous above, curved below. 



Buccinum prterosum, Linnteus, Syst. Nat. p. 1203. 

 Melan a buccinoidea, Olivier. 



Melanopsis buccinoidea, Ferussac. 

 Melanopsis lavigala, Lamarck. 

 Melanopsis fusiformis, Sowerby. 

 Ilab. Turkey, Asia Minor, Algeria. 



The only noticeable variation in this species occurs 

 in a form represented at Pig. 10 b, in which the whorls 

 are contracted, and swell into an obtuse ridge round the 

 upper part, and the shell is generally of a darker olive- 

 colour. 



