302 HELICIDiE. 



or seyen, moderately convex, the last constituting three- 

 fourths the length of the shell, somewhat compressed at 

 the middle, so as to become in a measure cylindrical, 

 narrowing forward and rounded at base ; suture strongly 

 marked, delicately crenulate. Aperture about one-half 

 the length of the shell, often more, and twice as long as 

 broad, narrow, ovate-lunate, acute posteriorly, obtusely 

 rounded anteriorly ; lip nearly rectilinear at its middle 

 portion, and springing somewhat forwards ; columella 

 arched at its lower portion, and decidedly truncate at 

 tip ; throat salmon-colored, edge of lip pale. 



Average length one and a half inches ; breadth some- 

 what more than one-third the length. 



Geogkaphical Distribution. Inhabits Florida, and 

 along the Atlantic coast as far as Charleston, S. C. It 

 has been found in Mississippi and Texas, and is common 

 among the West India Islands. 



Remarks. This is a very variable species. We have 

 given as synonyms, such references and names as we felt 

 no doubt related to the shell in question, satisfied at the 

 same time that many more might Justly be added had we 

 the means of deciding, by comparison, respecting shells 

 which are designated in books and cabinets under differ- 

 ent names. Bulla valuta of Chemnitz (^Achatina glans 

 of Lamarck) seems to have no characters decidedly 

 separating it from this ; and the same may be said of 

 the Buceinum striatum of MUller. If so, either of these 

 names would precede the one we have applied. But, 

 from the impossibility of comparing the specimens truly 



