BUL1MUS. 



whole foot glides smoothly forward, without any percepti- 

 ble alternate motion of the margins. 



SHELL conical, rather thick, smooth, shining, minutely 

 striated ; whorls 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 

 brown, 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. 



GEOGRAPHICAL 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 



