42 CHONDRIN^E OF THE PYRENEAN CENTER. 



Morocco : mountains of Beni Hosemar, opposite Tetuan, on 

 limestone cliffs (Kobelt). 



Pupa tingitana KOBELT, Jahrb. d. malak. Ges., ix, 1882, 

 p. 71. 



The specimen figured, labeled Tetuan, determined by Cles- 

 sin, is not exactly typical of the species or the variety. The 

 peristome is quite thin; angular lamella very low, irregular, 

 composed of low tubercles weakly connected, and sometimes 

 penetrating as far as the parietal lamella, but usually shorter 

 or interrupted. Parietal lamella high. Upper and lower 

 palatal plicas are rather long, a minute suprapalatal above 

 them. Length 7, diam. 2.9 mm. 



Chondrina tingitana algesirae (Kob.). Differs from the 

 preceding, which is close, by having the outer margin only 

 armed with two lamellae, and also the tubercle of the parietal 

 callous far more distinct. Found by me in multitudes on a 

 limestone ridge near Algeciras ; seems constantly distinct from 

 the preceding by the lack of the third lamella on the palate, 

 yet is apparently only a local variety (Kobelt). 



(e. Species of Algeria.) 

 27. CHONDRINA LETOURNEUXI (Bgt.). PL 3, figs. 14. 



Shell rimate, obese-oblong, ventricose, rather solid, corneous, 

 sharply and strongly costulate. Spire short, tapering, the 

 apex obtuse, smooth. Whorls 8, slightly convex, slowly in- 

 creasing, parted by a moderately impressed suture, the last 

 whorl tapering, compressed-carinate at base, deeply furrowed 

 in the middle, and strongly ascending at the insertion of the 

 outer lip. Aperture semioval, 7-folded ; a lamelliform fold at 

 the outer lip, a stronger, more deeply placed parietal fold, 

 two obliquely descending, emerging columellar folds, of which 

 the lower is stronger, and three lamelliform, emerging palatal 

 plicae, of which the upper is very strong, converges towards 

 the parietal fold, which it almost touches. Peristome thick- 

 ened, white, expanded, the outer margin arcuately angular 

 anteriorly; margins joined by a thick callous cut into seven 

 little teeth, one in the upper angle between the outer lip and 

 the large lamelliform fold, and six others between the large 



