HELIX. 135 



lunate-oval, brown inside; peristome white, margins connected by a 

 light callus ; columella wide, gibbous, callous. Diam. 32 mill. 



Mascara and Saida, Algiers. 

 Synonyms are If. chottica Ancey, and H. saidana Debeaux. 



H. BAILLONI Debeaux. PI. 46, figs. 51-53. 



Covered perforate, orbicularly depressed, solid, shining, striulate, 

 here and there lightly malleate, and under the lens seen to be encir- 

 cled with fine lines, white, with four rufous bands, the second and 

 third wide ; spire slightly convex, apex large, obtuse, suture distinct, 

 linear; whorls 4J, regularly increasing, convex, the last slightly 

 dilated transversely, rather flattened below, excavated at umbilicus r 

 deeply deflexed anteriorly; aperture small, ovate, oblique, lunate, 

 with white translucent band inside; peristome simple, slightly thick- 

 ened, the ends converging, joined by a thin subdilated callus, basal 

 margin concave, dilated at its insertion, lightly callous and subden- 

 tate. Diam. 24, alt. 13 mill. 



Province of Oran, betiveen Tint and Mograr, near the boundary of 

 Morocco. 



The large apex and small number of whorls at once separate this 

 form from H.juilleti, and other allied species. 



H. DENANSI Kobelt. PI. 46, figs. 61, 62. 



Covered umbilicate, depressed conoid, convex below, rather thin 

 and solid, somewhat shining, irregularly striatulate, the striae espe- 

 cially distinct below the sutures; under a strong lens showing fine 

 spiral lines; ground-color white, bands five, brown, and under the 

 sutures a series of radiating maculations; spire conoid, apex obtuse; 

 whorls 51, slowly and regularly increasing, the last decidedly widened 

 toward the aperture, suddenly, rather deeply deflected anteriorly, 

 but not so deeply as in other species of the group; aperture diagonal, 

 ovate-rotund, brown within ; peristome acute, outer margin expand- 

 ed, ends scarcely converging, joined by a thin callus; basal margin 

 at first straight, then truncate-tuberculate, uniting with the outer 

 lip with a slight angle. Diam. 23, alt. 14 mill. 



" This small form of the Juilleti group was communicated to me 

 some time ago by Mr. Albert Denans of Marseilles, without informa- 

 tion regarding the exact locality from whence it came. I cannot 

 identify it with any of the Pechaud-Bourguignat species." (Kobelt) 

 H.-BEGUIRANA Debeaux. PL 41, figs. 28, 29. 



Umbilicate, depressed globose, transversely ovate, solid, shining, 

 striate, at sutures costulate, with spiral impressed lines, malleate, 



