CONCHOLOGY. 



Genus— BULIMUS. Species— BULIMUS ZEBRA. 



Character — Shell univalve, spiral, the spire and body gib- 

 bous, the summit mamillary or rounded, having 

 no beak or rostrum, the cheek joined to the base of 

 the columella by an undulated curve, the form of 

 the left side of the mouth arcuated. 



THE genus Bulimus has been by some writers upou 

 Conchology placed with the Bulla or Buccinum, in the 

 form of the spire and body, however, there is a striking dif- 

 ference, sufficient to distinguish it compleatly from the 

 former. The genus Bulla has no spire protruding exter- 

 nally, but its revolution is involved or included internally, 

 and the Buccinum is remarkable for a protuberant band, 

 which is thickened and twisted upon the hinder part of the 

 rostrum. 



In the Bulimus the base of the shell is wholly joined 

 and has no open cavity, except in front, and is therefore to 

 be considered as wholly joined to the columella and body by 

 a gradual rounding, forming a pleasing serpentine line. 

 The internal surface of the mouth is grey undulated with 

 darker shades, the outside of the shell is richly striped with 

 purple, brown and yellow, and on the underside the body is 

 relieved by a rich blue contrasted by gold colour. 



The contrast of the colours in the specimen at present 

 to be described, is rich and harmonious, it is moulded by 

 the most graceful forms in Nature, a gently swelling oval 

 predominates throughout the whole and is charmingly va- 

 ried on the opposite sides of the shell. The spire is of a 

 pale amber shade at the top and is ornamented in its differ- 



