124 HELICID.E. 



DESCRIPTION. 



ANIMAL. Body of a delicate white color, very finely 

 granulated, upper tentacles rather long ; a dark line 

 arising between the tentacles and along the back passes 

 under the shell ; a fainter line is found along each side 

 of the neck. 



SHELL of medium size, solid, conic-globose, delicately 

 striate, but leaving the surface smooth and shining. The 

 ground color is variable, being white, dusky, greenish or 

 reddish, and either plain or variously encircled by dark 

 bands ; the tip and the lip, especially the columellar 

 portion, is always rose red, and generally, likewise, the 

 throat. The spire is elevated, composed of about five 

 and a half convex whorls, the outermost broadly rounded 

 at the periphery. The base is moderately convex and 

 perforated by a minute umbilicus, nearly covered by the 

 expanded and flattened pillar lip. Aperture small, ap- 

 proaching two-thirds of a circle, the peristome acute, 

 thickened within, a little everted, becoming more so 

 towards its inner junction. Among the varieties the 

 following may be enumerated : 



a. elevated, white with a median black band on the 

 outer whorl, which is sutural on the spire margined with 

 pale citron. 



I?, the same, with two approximate black basal bands. 



y. elevated, white with two narrow bands on the outer 



