BULIMUS. 267 



Tvhole foot glides smoothly forward, ■witliout any percepti- 

 ble alternate motion of the margins. 



Shell conical, rather thick, smooth, shining, minutely 

 striated; Avhorls seven to eight, convex, decreasing in 

 diameter gradually and regularly from the body-whorl to 

 the apex; suture impressed; apex obtuse, commonly 

 white, sometimes rosy ; aperture sub-oval, purely white 

 internally, sometimes with a thickened ridge within, and 

 parallel to the outer lip ; lip acute, sometimes crenate ; 

 columellar margin with a thin callus, sometimes rosy ; 

 columella sub-truncate in the young, entire in the mature 

 shell, imperforate. Surface beautifully variegated with 

 broad, entire or interrupted bands, lines, and spots of 

 bro^Tn, with bands and lines of green and yellow, and 

 with lines of rufous, revolving upon the whorls from the 

 apex to the aperture, but more distinct upon the outer 

 whorls.. A single system of coloring prevails in some 

 shells, while in others there is a mingling of all of them 

 upon the same specimen. 



Extreme length of axis 2.20 inches ; extreme diameter 

 of body-whorl one inch, ordinary diameter less. 



GEOGRiU'HiCAL DISTRIBUTION. Inhabits the south- 

 ern part of the peninsula of Florida, and the islands and 

 Keys adjacent to the coast. It is found abundantly at 

 Key- West, and in the vicinity of Cape Florida. 



Remarks. This is one of several strictly local spe- 

 cies, living in a climate and upon a soil differing from 

 those of any other portion of the country, which are 



