ABIDA. 327 



Nice, under stones in ravines (Risso). Maritime Alps from 

 Menton to the Var River. 



Clausilia polita Risso, Hist. Nat. Eur. Merid., iv, 1826, p. 

 87, pi. 4, f. 36. Pupa polita Risso, CAZIOT, tude sur les Moll, 

 terr. et fluv. de la Principaute de Monaco, 1910, p. 323. 

 Jaminia multidcntata Risso, t. c., p. 92. 



According to Commandant Caziot, this form, which he ranks 

 as a species, differs from P. variabilis by the constantly greater 

 dimensions, the number of whorls (12 or 13, instead of 9 or 

 10), its lengthened shape, the form of the aperture, etc. It is 

 very common in the Alpes-Maritimes, chiefly on low, dry 

 plants. 



G. Nevill gives length 19, diam. 4.5 mm., 15 whorls, for an 

 extreme turriculate form from the Hill of Grimaldi, and 

 length 15, diam. 4 mm., for an ordinary form from Roque- 

 brune, 1500 ft. elevation. 



Series of A. atracta. 

 Eastern Alpic center: Dalmatia, Greece. 



40. ABIDA ATRACTA Pils., n. n. PL 45, figs. 18, 19. 



The shell is subrimate, lengthened, fusiform, very gradually 

 tapering above, the apex rounded, smooth, the rest very finely, 

 obliquely striate; ground-color is yellowish corneous, some- 

 what darker below. Whorls narrow, a little convex, united by 

 a thread-like, scarcely impressed suture, the last whorl 

 scarcely a fourth of the spire, compressed below, flattened on 

 the neck, the base raised and somewhat tubercular. Aperture 

 rather small, irregularly semiovate, nearly vertical, whitish, 

 having 7 folds: two folds stand on the parietal wall, two 

 rather high ones on the columella, three in the palate, of which 

 the lower two emerge to the lip ; all three being visible exter- 

 nally as whitish lines on the neck, and below them an incom- 

 plete fourth appears as a whitish fleck on the base. The peri- 

 stome is white-lipped, the outer margin reflected, columella 

 expanded, forming a small umbilical fissure, terminations of 

 lip joined by a white callous. Length 6, diam. 1% lines 

 (Kuester). 



