SANDAHLIA. 259 



1. SANDAHLIA CYLINDRICA (Michaud). PL 46, figs. 1, 2, 3. 



The shell is umbilicate (the cavity enlarging inward), 

 cylindric with short terminal cone and obtuse apex; wood 

 brown; closely, finely and obliquely rib-striate. The whorls 

 are very narrow, slowly increasing, convex, the last half of 

 the last whorl straightened, enlarging and becoming white 

 towards the aperture, flattened laterally, somewhat carinate 

 beneath, marked with 4 white spiral lines ; the suture abruptly 

 ascending near the aperture. The aperture is truncate-oval, 

 vertical, obstructed by numerous teeth: angular lamella 

 duplicated, extending inward past the dorsal side, enlarged at 

 the inner end ; its twin branch is shorter, though long. Pari- 

 etal lamella strong, penetrating past the dorsal line. Colu- 

 mellar lamella subhorkontal, long, ascending at the inner end ; 

 subcolumellar more oblique. Upper and lower palatal plicae 

 strong, emerging, extending inward to a lateral position on 

 the left side where they are enlarged, and accompanied by a 

 suprapalatal and a small sutural fold. Basal fold interrupted, 

 but having an inward continuation like the others. There are 

 also some short accessory folds and lamellae on the basal, colu- 

 mellar and parietal margins. Peristome is somewhat ex- 

 panded and well thickened. 



Length 7.7, diam. above aperture 2.8 mm. ; ll 1 /^ whorls. 



Length 7, diam. above aperture 2.9 mm. ; IQi/o whorls. 



Spain : Bascara, a village south of Figueras, prov. Gerona, 

 under stones (Michaud). France: Villefranche, Aries, Prats- 

 de-Mollo and la Preste (Pyrenees-Orientales). 



Pupa cylindrica MICHAUD, Bull. d'Hist. Nat. de la Soc. 

 Linn, de Bordeaux, iii, 1829, p. 268, figs. 17, 18. ROSSMAESS- 

 LER, Iconogr., pt. 10, p. 27, pi. 49, f. 643. KUESTER, Conchyl. 

 Cab., p. 98, pi. 13, f . 12-15. PFR., Monogr., ii, 337 ; iii, 545 ; 

 iv, 671 ; vi, 312. MOQUIN-TANDON, Moll. Fr., p. 381, pi. 27, 

 f . 20-23 ; with var. polyodan, f . 24, var. longa, p. 382, f . 25, 

 and var. curta, p. 382. WESTERLUND, Fauna, iii, 1887, p. 92, 

 with form cchthrodes, n. n. for var. polyodon Moq. DUPUY, 

 Bull. Soc. d'Hist. Nat. Toulouse, xiii, 1879, p. 54, with var. 

 polyodon and var. el&ngatisswna, p. 55. CAZIOT, Ann. Soc. 

 Linn. Lyon, Annee 1916, p. 59. Helix dufourii FER., Tabl. 



