1 2 HELIX. 



H. AEGTA, Bourg. PL 2, figs. 45, 46. 



Umbilicus nearly covered, shell solid, cretaceous, shining, 

 irregularly striulate and obsoletely malleated ; whorls 6, slowly 

 increasing, sharply keeled, the keel becoming less strong or 

 finally obsolete on the last whorl. Diam. 23 mill. 



Bona, Algiers. 



Probably only another variety of the last species. 



H. FIMBRIATA, Bourg. PI. 2, figs. 47, 48. 



Covered perforate, subglobose, solid, cretaceous, subplanulate 

 above ; whorls 5, a little flattened, the first smooth, the following 

 subcarious, narrowly fimbriately carinated, the last deflected in 

 front, rounded, periphery obsolete!} 7 subangulated. 



Diam. 16 mill. 



Palestine, Mesopotamia. 

 Yar. ILLICITA, Mousson. 



Whorls slightly convex, suture incised, not carinately margined 

 above, sculpture indistinct, carina evanescent anteriorly, margin 

 of insertion callous, subthickened. 



Var. MYOPA, Westerl. 



Shell smaller, globosely contracted; suture well impressed, 

 tuberculatel} 1 - erose ; aperture rounded, peristorne thicker. 

 Diam. 12 mill. 



Yar. VARICOSULA, Westerl. 



Entire upper surface regularly finely granulated, periphery 

 with a keel and the trace of another above it. 



H. PROPHETARUM, Bourg. PL 2, figs. 49, 50. 



Covered perforate, depressed, solid, striulate, cretaceous, 

 white, suture impressed ; whorls 4j, flattened or slightly convex, 

 the last very obsoletely angulated, rounded in front, shortly and 



suddenly deflected. Diam. 16 mill. 



Palestine. 



Yar. ,j is more depressed, the last whorl obscurely bicarinate, 

 flattened below; Yar. ? is I GSS depressed, last whorl subrotund, 

 more convex below, peripheral extremities joined by a stronger 

 callus. 



