22 CHONDRIN^E OF THE ALPIC CENTER. 



6. CHONDRINA CIRCUMPLICATA ('Mouss.' West.). PL 4, figs. 

 12, 13. 



Shell shortly conic-turrited, dark purple to chocolate-brown, 

 nearly smooth ; whorls 8-9, convex, the last divided above the 

 middle by a spiral furrow. Aperture with 7 or 8 lamellae and 

 plicae: 2 parietal lamellae, the angular lamella very long; 2 

 columellar lamellae, the upper one prolonged to the margin; 

 3 or 4 palatal plicae, the margin moreover closely set with 

 small white folds. Length 6%, diam. 2y 2 mm. (West.). 



Italy : Val Membrano above Bergamo, Lombardy. 



Pupa circumplicata Mss., WESTERLUND, Malak. BL, xxii, 

 1875, p. 131 ; Fauna Europaea, 1878, p. 168 ; Fauna, iii, 1887, 

 p. 99. PFR., Monogr., viii, p. 385. Modicella c., WEST., 

 Synopsis, 1897, p. 98. Pupa multidentata STROBEL, Essai 

 d'une Distrib., 1857, not J. multidentata Risso, 1826. 



The lamellae and plicae are all stronger and longer than in 

 avenacea. The spiral lamella is either continuous with the 

 angular or separated from it. There is a deeply immersed 

 suprapalatal plica. The columellar lamella sometimes emerges 

 weakly to the lip, sometimes not, but there is a slender lamella 

 in the angle of columella and parietal wall. The specimens 

 figured are from the Marchesa Paulucci. 



7. CHONDRINA BERGOMENSIS ('Charp.' Kiister). PL 4, fig. 10. 



Shell short, deeply rimate, ovate-conic, lusterless, translu- 

 cent, closely, obliquely rib-striate, pale corneous-yellow, the 

 spire rather long, turrited, obtuse at apex ; 7-7% whorls are 

 weakly convex, with simple, strongly impressed suture, the 

 last somewhat ascending in front, slightly compressed below; 

 the neck ribbed, impressed above the middle anteriorly. Aper- 

 ture large, nearly ovate, 7-folded, 3 folds stand in the palate, 

 2 on the parietal wall, and 2 on the columella. The palatal 

 folds are long and show outside as white lines; peristome ex- 

 panded, scarcely thickened, whitish, the margins strongly con- 

 verging, joined by a thin, glossy callous. Length 2^-2%, 

 diam. % lines (Kuester). 



Italy: around Bergamo, especially in the villages Valbona, 



