70 TRUNCATELLINA. 



4th and 5th) about equally high, the last little higher, occupy- 

 ing about 1/4 to % the total height. Aperture roundish, but 

 little higher than wide, the outer margin roundly bowed in- 

 ward, and below that with weak indication of an inbendiug. 

 Peristome little expanded. Umbilicus open, round, but little 

 covered by the columellar lip. Length 1.5, diam. 0.5 to 0.75 

 mm. (Reinh.). 



Greece: around Athens (Roth). Lake Tiberias (Hesse). 



Pupa minutissima ROTH, Spicil. Moll., 1855, p. 24. Isthmia 

 rothi REINHARDT, Nachrbl. d. Mai. Ges., vol. 48, 1916, p. 164. 



Differs from cylindrica Fer. by the compact structure, the 

 peculiar form, wider above, the sharp, widely-spaced striation, 

 more convex whorls and deeper suture. 



8. TRUNCATELLINA MICULA (Mousson). 



Shell minute, perforate, tapering-cylindric, very delicately 

 rib-striate, without gloss, brownish-gray. Spire slowly taper- 

 ing, the summit shortly conic, obtuse; suture a little im- 

 pressed. Whorls 8, the first convex, following somewhat flat- 

 tened, the last somewhat inflated, a little ascending, rounded, 

 not compressed basally. Aperture sub vertical (making an 

 angle of 10 with the axis), less than one-fourth the total 

 length, truncate-subcircular, at base shortly curved, without 

 teeth. Peristome but slightly expanded, thinly white-lipped, 

 rather obtuse, the margins remote, right margin a little ex- 

 curved at the insertion, columellar margin slightly reflected. 

 Length 2, diam. 1 mm. 



Transcaucasus : Mahmutli (Sievers). 



Pupa (Pupilla-) micula Mouss., Journ. de Conchy!., xxiv, 

 1876, p. 40. PFR., Monogr., viii. 



It differs from "minutissima," according to Mousson, by 

 the form, a slightly conic cylinder, the large number of whorls 

 and their slight convexity. 



Reinhardt has provisionally identified specimens from the 

 drift of the Maritza at Philippopolis, Bulgaria, as this species. 

 They have 7 whorls, and measure, length 2.5 to 2.7, diam. 

 1.1 mm. 



