160 ZONITES. 



H. SCINTILLA, Lowe. n. 51, figs. 88-90. 



Umbilicus wide, spiral; whorls 5, moderately enlarging, thin, 

 shining, pellucid, greenish vitreous. Diam. 2 mill. 



Madeira. 



A H. crystallina in miniature, but with larger umbilicus. 



H. FESTINANS, Shuttl. PL 51, figs. 91, 92. 



Moderately, perspectively umbilicated, depressed, thin, striu- 

 late, pellucid, slightly shining, yellowish corneous, spire subplane, 

 suture profound ; whorls 5^, convex, very slowly enlarging, base 

 flattened and more shining. Diam 5 mill. 



Ins. Pal ma, Canaries. 

 H. VOLUTELLA, Pfr. PI. 51, ligs. 93-95. 



Umbilicus rather narrow, shell subdiscoidal, thin, striulnte, 

 light corneous, with rather close chestnut strigations ; whorls , r >, 

 slowly enlarging. Diam. 7 mill. 



Azores. 



H. brumalis, Morel, et Drouet, is a synonym. 



II. CIRCUMSESSA, Shuttl. PI. 51, figs. 96-98. 



Widely perspective^ umbilicated, reddish corneous, lightly 

 plicate-striate, with spiral lines; whorls 4^, convex, slowly in- 

 creasing, suture profound. Diam. 9 mill. 



Ins. Teneriffe and Pa I in a. 



Unfigured Specie?. 



II. OSORIENSIS, Wollaston. Grand Canary I. 



II. THEMERA, Mabille. Grand Cananj I. 



H. ROCHEBRUNEI, Mabille. Ins. Gomera. 



H. INERMIS, Morelet. Sierra Leone. 



*% Species Inhabiting the United States. 

 p II. INDENTATA, Say. PI. 51, figs. 99-1. 



stf Imperforate, flattened, thin, pellucid, epidermis highly polished, 

 > c i yellowish corneous; whorls more than four, rapidly enlarging 

 J^ with regular radiating impressed lines, bod} r whorl expanding 

 towards the aperture, suture well impressed. Diam. 5 mill. 

 United States, Canada, Maine to Florida, and Texas, 



Westward to Utah, St. Domingo, Porto l!i<'o. 



A variety occurs with the umbilical region narrowly perforated. 



o- H. sitbrupicolaj Dall., is a synonym. 



