HELIX. 223 



[. SIGNATA Ferussac. PI. 65, figs. 61-65. 



Covered perforate, subdepressed globose, white, ornamented with 

 (usually) three interrupted chestnut bands ; substriate ; whorls 5, a 

 little flattened, the last descending ; aperture very oblique, lunate- 

 rotund ; peristome patulous, brown, albolabiate, the margins subcon- 

 verging, the columellar callous, with a brown spot at its insertion. 

 Diam. 22, alt. 13 mill. (Pfei/er.) 



r Monte Cassino. 



H. ficuum Miihlf. (and H. circumornata Mart.?) are synonyms. 



H. ARGENTAKOL.E Paulucci, 1886. PI. 67, figs. 4-6. 



Perforate or partly covered perforate, rather thin, subtranslucent, 

 densely striate and malleate, whitish flesh-color, ornamented with a 

 wide, (sometimes interrupted) brown band below, and three zones of 

 varying intensity and width, composed of flecks of the same color 

 above ; globosely depressed, spire convex, slightly elevated, apex mi- 

 nute, acute ; whorls 5, the inner regularly, last rapidly increasing, 

 separated by impressed sutures ; body-whorl wide, rotund, inflated 

 below, abruptly greatly deflexed and descending anteriorly ; aper- 

 ture wide, ovate ; peristome thin, briefly reflexed, the columellar 

 margin expanded, partly covering the umbilicus, brown-maculate. 



Diam. 25 ?, alt. 15 mill. (Paulucci.) 



Promontory of Argentaro, Italy. 



A very distinct species. 



H. FORSYTHI Paulucci, 1886. PL 65, figs. 66-68. 



Subcovered perforate, conico-depressed, solid, opaque, regularly 

 densely striate bluish white, with three to four interrupted chestnut 

 bands ; apex acute, smooth ; whorls 5, declivous, slowly increasing, 

 the last large, inflated below, deflexed at the aperture ; aperture ob- 

 lique, subcircular, pale chestnut within, the margins approximating, 

 the basal arcuate, brown-maculate at the insertion, the peristome 

 somewhat reflexed. Diam. 18, alt. 11 mill. (Paulucci.) 



Promontory of Argentaro. 



H.forsythi is somewhat intermediate between surrentina and stri- 

 (jut<t var. fuscolabiata. From surrentina the bluish-white color, les& 

 rounded, more sloping form, the body-whorl more swollen below, 

 rougher sculpture, different color pattern, and especially the more 

 circular aperture distinguish it. From fuscolabiate, it is separated 

 by the more sloping form, narrower last whorl, rounder, more oblique 

 aperture and notably diverse sculpture. 



