CHONDRIN/E OF THE PYRENEAN CENTER. 43 



fold and the columellar margin. Length 51/0, diain. 2y<> mm. 

 (Bgt.). 



Algeria : debris of the ravine of Chabet-Beinan, near Cape 

 Caxine, 14 kilometers west of Algiers (Letourneux, Poupil- 

 lier) . 



Pupa letourneuxi BOURGUIGNAT, Malacologie de 1'Algerie, 

 ii, 1864, p. 78, pi. 5, f. 19-22. 



The exact relations of this species and the next are in doubt, 

 as we do not know whether there is an internal palatal plica 

 above the upper emerging one, and the presence of a spiral 

 lamella is uncertain. Their presence in Algeria is rather 

 anomalous, as they appear to be of Pyrenean type. I have 

 elsewhere (p. 4) referred to the Algerian records for C. 

 goniostoma and other Pyreueau species. 



28. CHONDRINA LALLEMANTIANA (Bgt.). PI. 3, fig. 13. 



Shell rimate, acuminate-elongate, ventricose at base, solid, 

 somewhat glossy, subpellucid, under the lens regularly and 

 obsoletely subcostulate, pale corneous or whitish-ashen. Spire 

 acuminate, the apex smooth, rather acute. Whorls 9, a little 

 convex, slowly increasing, separated by an impressed suture, 

 the last whorl tapering, compressed at the base (as though 

 gibbous) and carinate (the keel acute, strong, nearly disap- 

 pearing at the peristome), at the periphery thicker, whitish, 

 and strongly ascending at the outer lip. Aperture semiovate, 

 slightly contracted below, having 7 folds: a lamelliform fold 

 at the outer lip ; parietal fold minute, lamelliform ; 2 strong 

 columellar folds; and 3 emerging, lamelliform palatal plicae, 

 of which the upper is stronger. Peristome white-thickened, 

 expanded, strongly reflected at base ; outer margin arcuate 

 anteriorly; the margins joined by a whitish callous orna- 

 mented with 7 or 8 very long little plications. Length 7, diam. 

 3 mm. (Bgt.}. 



Algeria : debris of the ravine Chabet-Beinan, near Cape 

 Caxine, 14 kilometers west of Algiers (Letourneux, Poupil- 

 lier). 



Pupa lallemantiana BOURGUIGNAT, Malacologie de 1'Algcrie, 

 ii, 1864, p. 80, pi. 5, f. 23-27. 



