HELIX. 133 



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aperture very broadly semilunar, oblique, nearly black within ; 

 peristome expanded, obtuse, black, the ends converging and con- 

 nected by a black callus ; a dentate callus on columella. 



Diam. 35, alt. 18-20 mill. 



Oran, Algiers. 



It is H. lactea var. of Rossm., and H. kispanica Mich. It is 

 flatter than H. lactea, with less oblique aperture. The bands are 

 usually continuous and distinct. 



H. GHAZOUANA Debeaux. PL 46, figs. 47, 48. 



Covered umbilicate, depressed globose, solid, very finely striate, 

 under the lens finely spirally striate, white, encircled by five deep 

 chestnut zones, which are interrupted throughout by vermicular 

 white flecks and spots, behind the aperture and between the bands 

 covered with numerous netted anastomosing lines; spire depressed 

 conoid, apex small, slightly prominent ; suture simple, linear ; whorls 

 5, regularly, rapidly increasing, the first a little flattened, last rather 

 inflated, rounded, below subplaue, anteriorly deeply deflexed ; aper- 

 ture very oblique, ovate rotund, distinctly lunate, deep blackish 

 brown within ; peristome acute, upper and outer margins expanded, 

 deep brown, edged with fuscous, margins subconverging, joined by 

 a thin callus, the basal margin thickened, at first straight, then 

 sharply tuberculate, before the tubercle lightly excavated, and join- 

 ing the outer lip with a slight angle. Diam. 27, alt. 16 mill. 



Near Nemours, Algiers. 



This form differs from H. lucasi in the lesser size, more solid 

 shell, and white-punctate bands. 



H. HIEROGLYPHICULA Michaud. PL 40, figs. 17-19. 



Imperforate, depressed, solid, shining, white, with brown flecks 

 and four or five deep brown bands, the upper often interrupted ; 

 revolving lines and incremental strine very minute ; spire dome- 

 shaped, depressed ; whorls 5, flattened ; apex smooth, obtuse ; body 

 whorl swollen, turgid below on its last half, abruptly deflexed in 

 front; aperture very oblique, small, oblong, peristome slightly ex- 

 panded, white, labiate, with a broad prominently dentate callus at 

 base ; margins connected by a light callus ; fauces and columella 



deep castaneous. Diam. 24 mill. 



Oran, Algiers. 



A " var. " integrivittis, with bands not interrupted, has been de- 

 scribed by Ancey. (PL 40, fig. 16.) 

 H. oranica Bourg. is a synonym. 



