HELIX. 227 



whorls flat, carinated, the carina fitting into the suture; last whorl 

 convex, rounded at the periphery, indented around the umbilicus, 

 rather abruptly deflexed anteriorly; aperture oval, very oblique; 

 peristome expanded, white, sublabiate, the margins arcuate and 

 converging, joined by a white parietal callus; basal margin retlexed, 

 not adnate, partially concealing the umbilicus. 



Diam. 36, alt. 19 mill. 



Crete ; Rhodes ; Palestine. 



The typical form is the small island variety of Crete. The large 

 form found about Jerusalem has been called var. hierosolyma Boiss. 



Var. (L*:SAREANA Parreyss. PI. 61, figs. 100, lOOa, lOOb. 



This form may be distinguished by the usually completely closed 

 umbilicus, the keel on the body whorl distinct, at least at its origin. 



Var. MALTZIANA Parreyss. PI. 55, figs. 53, 54. 



Subcovered umbilicate, subdepressed, solid, obliquely arcuately 

 rather roughly striate, opaque, whitish, marked with interrupted 

 brown bands; spire subconoidal, apex obtuse; whorls 4 to 4, the 

 inner ones carinated, the last depressed, subangulated, (the angle 

 becoming evanescent toward the last), anteriorly deflexed, the base 

 not inflated ; aperture very oblique, suboval, dull flesh-colored 

 within; peristome white, the margins joined by a light callus, the 

 right margin expanded, columellar broadly reflexed, almost entirely 

 covering the umbilicus. Diam. 28, alt. 13 <i mill. (Pfeiffer.) 



Rhodes. 



H. ccesareana var. nana Mouss. is synonymous. 



Var. MASAD.E Tristram, 1865. Unfiyured. 



Umbilicate, depressed, solid, whitish, transversely regularly and 

 deeply striate above and below ; ornamented with evanescent brown 

 white-interrupted zones ; whorls 5, the upper carinated, plane, pro- 

 duced at the sutures, the last deeply deflexed; aperture oblique, 

 rounded ; peristome reflexed, expanded, frequently concealing the 

 umbilicus. 



Diam. 30, alt. 14 mill. Diam. of aperture 13, alt. 11 mill. 



Sebbeh (formerly Masada) Palestine, and the most barren and 

 sterile mountains from there to Jebel Usdum, the salt-mountain. 

 The deep and regular striation of this shell at once distinguishes it 

 from H. spiriplana, for a small variety of which (such as that which 

 Conrad has described under the name H. lithophaga) it might other- 

 wise be mistaken. (Tristram.) 



