DES€RirTIOK. 



Shell subglobular ; spire not very prominent, but more 

 than convex ; whorls live, obsoletely striated across, regu- 

 larly rounded ; colour pale greenish, yellowish, or slightly 

 tinged with reddish, particularly on the body, and mar- 

 gined above by a paler line ; on the middle of the body 

 whorl a paler band revolves which is sometimes margined 

 by a dusky colour, and is also sometimes obsolete or alto' 

 gether wanting ; base of the columella very slightly pro- 

 jecting into an obtuse angle ; labrum whitish, reflected. 

 Animal pale ; rostrum and tentacula blackish, the latter 

 with a white line ; eyes very black, elevated in form of a 

 short tubercle ; length about equal to the breadth of the 

 shell ; foot not broader than the body ; operculum yellow- 

 ish brown, granulated. 



OBSERVATIONS. 



During a sliort visit to Florida, ni company with Mn 

 Maclure, I discovered this shell, in great immbers on the 

 '•Oyster shell Hammocks." These are elevated knolls 

 of oyster shells intermixed with earth, which rise by an 

 abrupt acclivity on all sides, from the salt marshes near 

 the mouth of St. John's river, to the elevation of iiftecn or 

 twenty feet. 



UEFEUEKCE TO TJIE I'LATE. 



I'"ig. i, doraal view, / ». i , 



J, iront vicu-> 3 



3, natural size- 

 IM. 46. 



