38 CHONDRIN^E OF THE PYRENEAN CENTER. 



Central Spain, in drift of the Jarama river (S. Calderon). 

 P.[upa] (Modicella) gratiosa WESTERLUND, Ann. Mus. Zool. 

 Acad. Imp. Sci. St. Petersb., iii, 1898, p. 167. 

 It seems to be near P. sardoa Cantr. (West.). 



(c. Species of Northern Spain.) 



Besides the following forms, C. gorbeana, no. 40, belongs to 

 this district. 



22. CHONDRINA VASCONICA (Kobelt). 



Shell fusiform-turrited, the spire slender, rather obtuse at 

 the apex, rufescent-corneous, finely rib-striate; 8 convex 

 whorls, separated by a deep suture, slowly increasing, the last 

 a little longer than the penult, compressed at base, distinctly 

 ascending in front, compressed behind the aperture, and 

 lightly scarred over the lamella. Aperture small, truncate- 

 ovate, with the peristome thickened, margins joined by a very 

 thin callous, contracted by 6 lamellas : two in the parietal wall, 

 one larger, reaching the callous at the insertion of the outer 

 margin, the other deep, entering, small ; a third at the begin- 

 ning of the basal margin ; and three parallel folds in the outer 

 margin, shining through to the outside, of which the lower is 

 scarcely visible in the aperture. Length 6, diam. 2, alt. aper- 

 ture scarcely 1.5 mm. (Kobelt). 



Spain: Orduna, Biscaya (Kob.). 



Pupa vasconica KOBELT, Jahrb. d. Malak. Ges., ix, 1882, 

 p. 72. 



23. CHONDRINA KOBELTI ('Hid.' West erlund). 



Shell oblong with rather conic spire, irregularly striate, 

 chestnut-brown, whitish near the aperture. Whorls 7, very 

 convex, the last rounded beneath, flattened anteriorly, slowly 

 ascending above ; suture impressed. Aperture triangular- 

 oblong, with 6 or 7 teeth : 2 parietal lamellae, the angular long, 

 1 columellar lamella, situated high, horizontal in front, not 

 running forward, curving upward rapidly within ; 4 palatal 

 folds, the first very small, within, the other three nearly equal, 

 separated, elevated within, very shortly entering. Peristome 



