136 HELIX. 



white, with five bands, often confluent or irregularly broken ; whorls 

 52-6, slightly convex, regularly increasing, the last dilated, inflated 

 on base, anteriorly deflexed; aperture ovate-lunar, oblique, bright 

 chestnut within ; peristome white, slightly labiate, margins distant, 

 subparallel; columella contracted, with a callous thickening. 



Diam. 31 mill. Beguira, near Mascara, Algiers. 



Probably a form of H. juilleti as Kobelt at first considered it. 



H. WAGNERI Rossmaessler. PI. 41, figs. 30, 31. 



Similar to H. juilleti, but distinguished by the much more de- 

 pressed form and thinner shell. From H. begiurana it is separated 

 by the larger mouth, which is not contracted as in that species. 



Boghar and Mascara, Algiers. 



H. CHARIEIA Pechaud. PI. 46, figs. 45, 46. 



Imperforate, depressed conoid, below convex, rather solid and 

 shining, irregularly striulate, encircled with impressed interrupted 

 lines, and marked with longer or shorter cicatrices ["narbenlinien"] 

 which cross the sculpture obliquely, especially near the aperture ; 

 color milky-white, with a narrow castaneous band at the periphery; 

 above this band covered with narrow interrupted little bands and 

 numerous white points, giving the color effect of coffee with milk ; 

 spire flattened conic, with blunt apex ; suture linear, becoming im- 

 pressed toward the aperture; whorls 6, the last slightly dilated, 

 base convex, lightly impressed at place of umbilicus, abruptly 

 arcuately deflexed anteriorly; aperture very oblique, semi-ovate, 

 lunate, castaneous within ; peristome obtuse, thickened, white, mar- 

 gins sub-converging, joined by a light callus, upper margin straight, 

 outer slightly reflexed, basal straightened, with a* more or less dis- 

 tinct denticle. Diam. 30-31, alt. 15-17 mill. 



Mts. of Daya, at the source of the Sig, Or an, Algiers. 



Allied to H. wagneri, but differing both in shell and dentition. 

 According to Kobelt from whom I have taken the above description, 

 the central teeth are somewhat asymmetrical in this species a very 

 unusual character in the present group. 



H. JOURDANIANA Bourguignat. PI. 41, figs. 32, 33. 



Imperforate, globose, solid, shining, lightly striate, obscurely mal- 

 leate, white, with four corneous brown bands, broken by irregular 

 whitish patches ; spire convex, conoidal ; sutures moderately im- 

 pressed ; apex smooth ; whorls 5, the first flattened, regularly in- 

 creasing, the last well rounded, abruptly descending anteriorly ; 



