290 ABIDA. 



secale, the peristome thinner, not continuous, and the folds 

 are more delicate and differently arranged, 7x2 mm. Sta- 

 tion Plantade on the Pic du Midi de Bigorre (de Nansouty). 

 Pupa nansmityi Fagot, Bull. Soc. d'Hist. Nat. de Toulouse, 

 xiv, 1880, p. 205. P. nansoutyana Fag., in Journ. de Conchyl., 

 xxix, 87. 



16. ABIDA RETRACTA (West.). 



Shell perforate, cyliiidric-conic, very densely striatulate, 

 pale corneous. Whorls 8, convex, slowly and regularly in- 

 creasing, separated by an impressed suture, rather oblique 

 below, the last whorl slowly ascending in front, angular above, 

 rounded basally. Aperture ovate-elliptical; one immersed, 

 curved parietal fold, two very short, deeply immersed colu- 

 mellar folds, the second scarcely visible ; four immersed, par- 

 allel, palatal plicae, subequal in front, the first and fourth very 

 short, third rather long. There is also a small tubercle at the 

 insertion of the outer lip. Peristome a little expanded, the 

 margins subparallel, the outer margin curved in an obtuse 

 angle above. Length 6, width 2 mm. Related to P. nansoutiji 

 Fag. (Pupa (Torquilla) retracta Westerlund, Nachrbl. d. M. 

 Ges., 1892, p. 194; Anales de la Soc. Espanola de Hist. Nat. 

 (2), i, 1892, p. 388.) 



Spain: Seville, in debris of the Guadalquivir (Prof. Cal- 

 deron). 



Var. semidens West. Shell more strongly and regularly 

 striate ; whorls 7, aperture with 4 long palatal plicae equally 

 distant from the margin, the first, second and fourth very 

 short, thick, third a little longer, all tapering in short plicae. 

 Albarracin, Spain; B. Zapater. Pupa (Torquilla) retracta 

 West. var. semidens WESTERLUND, Nachrbl., 1893, p. 120; 

 Synopsis, p. 86.) 



17. ABIDA AULUSENSIS (Fagot). 



Shell minutely perforate-rimate, cylindric with rounded 

 apex, reddish horn-color, lusterless, quite transparent, regu- 

 larly, obliquely striate, the last two whorls almost smooth. 

 Whorls 91/2-10, quite flattened, slowly and regularly increas- 



