146 ZON1TES. 



striate, yellowish corneous; whorls 5, regularly enlarging, base 

 flattened, aperture oblique, wide. Diam. 8'5 mill. 



Alicuri, one of the Lipari Ixl and*. 

 H. GLABRA, Studcr. PI. 47, figs. 100-2. 



Narrowly umbilicated, polished, diaphanous, fulvous above, 

 becoming whitish below ; whorls 5, regularly enlarging, obliquely 

 flattened above, subplane below, aperture widely obliquely lunar. 



Diam. 15 mill. 



France, Germany, Switzerland, etc. 



It is H. tenera and H. lurida, Studer, H. exquisita, Desh., and 

 is the type of the group Gemma, Hazay (preoccupied in Yene- 

 ridse). 



Yar. HUNGARICA, Westerlund. 



Shell larger, obsoletely irregularly striulate, shining, more 

 convex above, narrowly excavated around the umbilicus ; whorls 

 6. Diam. 17-18 mill. 



Hungary. 

 H. DEPRESSA,.Sterki. PI. 48, figs. 3, 4. 



Narrowly perforate, scarcely convexabove, hyaline, shining, 

 whitish or yellowish white ; whorls 5, suture margined, last whorl 

 nearly double the width of the penultimate, very slightly descend- 

 ing at the aperture in the adult. Diam. 8 mill. 



Upper Rheinthal, Southern portion of the Black Forest, etc. 



H. SUBGLABRA, Bourg. PI. 48, figs. 5-7. 



Perforate, shining, diaphanous, fragile, corneous above, milky 

 white below, slightly striulate, especially at the suture ; whorls 6, 

 regularly increasing, suture impressed. Diam. 13-16 mill. 



Northern France. 



The more distinct suture, the wider last whorl, the wider per- 

 foration and more distinct stria 1 separate this, perhaps only 

 varietally, from H. glabra. 



H. MENTONICA, Nevill. PI. 48, figs. 8, 9. 



Narrowly perforate, spire elevated, subobsoletely striulate, 

 corneous, shining ; whorls 6, regularly enlarging, the last whorl 

 very slightly compressed, not dilated towards the aperture, base 

 convex. Diam. 5'75 mill. 



Ste. Agnes, 2500 ft. alt. at Mentone,, France. 



Only one specimen collected. 



