COLUMBELLA. MITRA. 115 



tuse, frequently eroded or truncated ; mouth some- 

 what purplish; lip thick, gibbous, and toothed. 

 f . W. S. 4. 19. 



C. MENDiCARiA. Ovate-ventricosc, nodulous, 

 transversely striated, and girded with alternate 

 bands of white and black ; mouth somewhat of a 

 cinnamon-colour ; lip thick, and toothed, f . W. 

 20. 79. 



C. PUNCTATA. Ovate - turbinated, smooth, 

 but striated at the base ; white spots on a deep 

 chestnut ground ; lip thick, much swollen at the 

 centre, somewhat violet, and toothed, f. E. 

 374. 4. 



MITRA. 



Shell turreted or sub-fusiform; spire pointed at 

 summit; base emarginated, without a canal; 

 columella with parallel transverse plaits, the 

 inferior of which are the smallest ; pillar-lip 

 thin, adnate. 



M. EPiscoPALis. Turreted, smooth, white, 

 with rows of scarlet spots ; the lower spots square, 

 the upper itregular ; upper margin of the whorls 

 entire ; pillar with four plaits ; lip denticulated 

 posteriorly. 4. W. 21. 143. 



M. PAPAL.IS. Turreted, thick, ponderous, 

 girded with rows of impressed dots, white, with 

 several rows of deep-red spots ; the upper margin 

 of the whorls crowned with dentiform plaits -, pil- 



