206 HELIX. 



Var. CRISPATA Benoit. PL 60, figs. 68-70. 



Strongly sculptured with radiating ribs, which extend to the axis 

 below; periphery not keeled. .~\f<trsala, Sicily. 



Var. ALUTACEA Paul. PL 62, figs. 44-48. 



Shell smooth, leather-colored. Calabria. 



Var. INSULARIS Benoit. 



Depressed; below interruptedly unifasciate with rufous, above or- 

 namented with series of zigzag raMiating strigations ; axis marked, 

 with a brown spot; radiating sculpture subobsolete. 



Maretimo. 



Var. UNDDLATA Michaud. PL 62, figs. 38, 39. 



Whitish, with radiating undulating or zigzag brown strigations 

 above, and one or more cordons of square or arrow-shaped blotches 

 below the periphery. 



Provence; Italy; Sicily. 



H. serpentina var. communis Benoit is synonymous. 



H. TIBERIANA Benoit, 1859. PL 64, figs. 21, 22. 



Covered perforate, pyramidal or slightly depressed, costulate- 

 rugose, the costulre becoming evanescent on the base, scarcely shining, 

 rather solid, bluish white, sometimes a little maculate or interrupt- 

 edly fasciate with brown; spire exserted, apex obtuse; whorls 5, 

 subplanulate, carinate, the carina upon the spire lying in the suture; 

 last whorl becoming rounded toward the aperture, profoundly and 

 abruptly descending anteriorly ; aperture oblique, ovate-lunate, peri- 

 stome white, the margins converging, the upper expanded, the basal 

 reflexed, base callous, sometimes subdeutate, dilated at the insertion, 

 appressed, covering the umbilicus, axis with a brown spot; fauces 

 brown. Diam. 21, alt. 12-13 mill. 



Scupedda, nenr Calatafimini, north coast of Sicily. 



Separated from its allies by the straight, conical spire; the surface 

 generally exhibits the same microscopic granulation that is found 

 in H. scabriuscula, mural is, etc. 



H. GLOBULARIS Ziegler, 1838. PL 38, figs. 82, 83. 



Imperforate, depressed-conic-globose, solid, finely striate; whorls 

 4], slightly convex, the last rounded, descending anterior]) 7 ; aper- 

 ture oblique, oval-lunar; peristome expanded, the margins converg- 

 ing, the basal margin callous, flattened, appressed for half its length 



