CANCELLARIA. 277 



Sub-gen. apheea, H. and A. Adams. 



Shell ovate, not urabilicated ; outer lip thickened ; inner lip 

 callous, and spread over the body-whorl ; aperture effuse in front. 



tessellata, Sow. 



Sub-gen. euclia, H. and A. Adams. 



Shell pyriform, not umbilicated ; spire very short, whorls 

 smooth ; columella with strong, anterior plaits. 



bulbulus, Soiv. pyrum, Adams and Reeve. 



cassidiformis, Sow. solida, Sow. 



Sub-gen. meeica, H. and A. Adams. 



Shell ovate ; spire acute, whorls decussated or reticulated ; 

 aperture oblong, without an emargination in front; inner lip 

 callous, defined ; columella with oblique plaits ; outer lip acute, 

 lirate internally. 



elegans. Sow. oblonga, Sow. 



melanostoma. Sow. purpuriformis, Valenc. 



Sub-gen, naeona, H. and A. Adams. 



Shell ovately fusiform ; spire elevated, acute, whorls ribbed 

 and clathrate ; aperture oblong, produced anteriorly into a short 

 canal ; columella usually with two plaits, the posterior the 

 largest ; outer lip crenate. 



clavatula, Sow. mitrteformis. Sow. 



elata, Hinds. tseniata, Sow. 



