HELIX. 121 



H. TLEMCENENSIS, Bourg. PI. 24, figs. 35-37. 



Perforate, scarcely convex above, lightly acutely striated, thin, 

 fragile, corneous, subpellucid ; whorls 5, slowly increasing, rounded 

 below, peristome subangulated ; exterior margin of aperture uni- 

 dentate, basal margin planulate or arcuate, lip white, lightly 

 reflected. Diam. 8 mill. 



Tlemcen, Algiers. 



H. Pechaudi, Bourg. (unfigured), is probably a variety. 



H. RANGIANA, Fer. PI. 24, figs. 32-34. 



Openly umbilicated, lenticular, acutely carinated, corneous, 

 closely radiately striate; whorls 6, a little convex; peristome 

 simple, sinuated above, uncinately recurved at the carina, basal 

 margin thickened, reflected, unidentate, scrobiculate externally. 



Diam. 12 mill. 



Pyrenees. 



H. CONSTRICTA, Boub^e. PI. 24, figs. 38-40. 



Umbilicated, rather thin, closely arcuately costulate, brownish, 

 not shining; whorls 5, slightly convex, slowly increasing, the last 

 obsoletely angulated above, inflated below, not descending in front, 

 constricted below at the aperture ; umbilicus narrow ; peristome 

 whitish, its margins connected by a parietal lamina, upper margin 

 sinuated, expanded, basal margin narrowly reflected. 



Diam. 6.75 mill. 



Basque provinces, Spain. 



H. Pittorrii, Dupuy, is a synonym. 



H. BUVINIERI, Michaud. PI. 24, figs. 43-45. 



Umbilicus closed, shell light corneous, regularly, elegantly, dis- 

 tantly sulcate ; whorls 8, moderately increasing, the last subcarinate, 

 convex and very lightly striate below; aperture compressed, ob- 

 tusely dentate below, peristome margined within, reflected, rosy 

 white. Diam. 10 mill. 



Asturia. 



H. Asturica, Pfr., is a synonym. 



H. GOUGETI, Terver. PI. 24, figs. 46-48. 



Somewhat covered perforate, corneous, costulate-striate ; whorls 

 7, very narrow, a little convex, the base more convex, striulate ; 

 peristome shortly reflected, white callused within, basal margin 

 slightly curved, unidentate. Diam. 9 mill. 



Algiers; Asturia. 



