CONCHOLOGY. 



PLATE XXII. 



VOLUTA PYRUM 

 PEAR VOLUTE. 



Back View. 



Univalve. 



generic character. 



Spiral ; aperture without a beak, and somewhat effuse : pUlar 

 twisted or plaited, generally without lips or perforation. 



*:H=#* Fusiform. 



SPECIFIC CHARACTER 

 AND 

 SYNONYMS. 



Shell obovate and slightly tailed with striated whorls on the 

 spire : tip produced and glabrous : pillar with three plaits. 



