80 TRUNCATELLINA. 



H*fl*i 

 immersed, the columella with a tooth-like callus. Peristome 



simple, a little expanded, margins separated. Length % to 

 3/4, width scarcely y line [about 1. 1.25 to 1.56, d. 0.5 mm.] 

 (Gredler). 



Var. anodus. Without tooth ; occurs with the typical form 

 (Gredler). 



Southern Europe, from France to Dalmatia; originally 

 found in the Austrian Tyrol near Salegg at the foot of the 

 Schlern and gorge of the Sarn valley. 



Pupa claustralis GREDLER, Verb, zool.-bot. Vereins in Wien, 

 vi, 1856, p. 116, pi. 2, f. 1. PFR., Monogr., iv, 678. WESTER- 

 LUND, Malak. BL, xxii, p. 126; Fauna, 1887, p. 127. BOETT- 

 GER, Nachrbl., xi, 1879, p. 67 (distribution in France, etc.).- 

 Pupa (Isthmia) claustralis KOBELT, Iconographie, (2), viii, p. 

 84, pi. 234, f . 1515. - - WEISS, Nbl. d. Mai. Ges., 1894, p. 156 

 (Pleistocene, Weimar-Taubach) . 



Distinguished by the strong teeth, the palatal fold deeply 

 immersed, concealed behind the columella in a direct face 

 view. Variable in size among the specimens at hand. 



Length 1.7, diam. 0.8 mm. 



Length 1.55 mm. 



Boettger considers P. clavella Eeinh. scarcely varietally dis- 

 tinct from claustralis Gredl. ; the supposed difference of con- 

 tour noted by Reinhardt is not distinctive. P. o-pisthodon 

 Reinlu, too, Boettger held, is at most not more than varietally 

 distinct, and cannot possibly be distinguished specifically by 

 the stronger columellar tooth. Like strobeli and "minutis- 

 sima," P. claustralis has a certain variability with locality, 

 and as in most small Pupse, a very wide distribution ( Jahrb. 

 d. Mai. Ges., x, 184). 



14o. T. claustralis salurnensis (Reinh). PL 11, figs. Qa-d. 



Shell dextral, minute, fusiform, subperforate, glossy, cor- 

 neous, under the lens slightly striate. Whorls 6 l /2, convex, 

 the first rapidly increasing, third and fourth subequal, the 

 rest slowly decreasing; last whorl tapering, slightly ascending 

 in front; suture deep. Aperture rounded, vertical, 3-plicate: 

 an entering lamelliform parietal fold, another strong one 



