296 ABIDA. 



characterized later, belongs to the group of Pupa pyrenearia, 

 but is easily distinguished from its congeners by the spire, 

 which regularly tapers from aperture to summit, a little like 

 P. affinis (Rossm.) and our P. bofilliana. Pupa attenuata is 

 abundant in the valleys of the Aude and the Agly, where it 

 replaces P. vergnesiana of Ariege. Banks of the Agly a little 

 above 1'Ermitage, in the ravine (Pupa attenuata Fagot, Bull. 

 Soc. Malac. France, iii, 1886, p. 202). 



This form was described more in detail by Westerlund from 

 specimens supplied by Fagot. "Similar to leptospira, but 

 conic-turrite, gradually and regularly tapering from the aper- 

 ture upward, horn-brown ; whorls 9, the six upper very slowly 

 increasing, the three lower much broader, but of about equal 

 width; the uppermost three cylindric, the rest convex, the 

 last whorl rapidly sloping behind. Angular lamella very 

 long; columellar lamella deep within; peristome thin. Length 

 7, diam. 2 mm." (Westerlund, Fauna, iii, 1887, p. 114.) 



29. ABIDA OPAREA 'Bgt.' Loc. Narrowly elongate, Clausili- 

 f orm, tapering slowly at the base and summit ; 9-10 quite con- 

 vex whorls, a little high, especially the last, the suture quite 

 impressed. Aperture subtriangular, quite angular at the 

 base, contracted above ; 2 thin superior folds, one lodged at 

 the suture, the other immersed; 2 immersed columellars, tin- 

 first stronger, situated in the superior angle ; 3 palatals, only 

 the first attaining the margin, the last very small. Peristome 

 subcoiitinuous, thin, slightly everted. Shell red-brown, orna- 

 mented with very fine strise, crowded, a little irregular. Alt. 

 10, diam. 2% mm. Very rare ; le Tourmalet, Saint-Sauveur 

 (Hautes-Pyrenees). Pupa oparea Brgt. in coll., Locard, Ann. 

 Soc. de I'Agricult. Lyou (7), iii, 1896, p. 205. Placed by M. 

 Locard in the group of micheli. 



Series of A. frumentum. 



Cylindric, having four long palatal plicae, an interpalatal 

 being developed; also a short, immersed suprapalatal or 

 sutural plica. Chiefly developed in the eastern and southern 

 Alps, but A. frumentum spreads far into Austria, Germany 

 and France. 



a 1 . A distinct twin lamella 'accessory to the angular lamella, 

 at the upper angle of the lip. 



6 1 . Accessory lamella rather long. A. apennina, no. 32. 



6 2 . Accessory lamella short; no whitish callous swelling 

 behind the outer lip. A. illyrica, no. 31. 



