68 TRUNCATELLINA. 



strise ; the much more obtuse summit, not beginning to taper 

 until the fourth whorl from the aperture ; finally by the aper- 

 ture without trace of teeth and with thick, dark margin 

 (Mousson). 



5. TRUNCATELLINA DOUMETI (Let. et Bgt.). 



The shell is very minute, very narrowly perforate, short, 

 cylindric, more swollen at summit than at base, fragile, sub- 

 diaphanous, corneous, well striated obliquely. Spire short, 

 very obtuse at summit, rounded dome-like. Whorls 5, convex 

 (the embryonic minute, paler), rather slowly increasing, sep- 

 arated by a deep suture, the last moderate, convex, margin 

 lightly flattened outwardly, tapering at base, straight above 

 at the insertion. Aperture very oblique, receding below, 

 lunate, semiovate, toothless; peristome a little thickened, 

 spreading and whitish; columellar margin strong, reflexed; 

 margins remote. Length 1.5, diam. 0.75 mm. (L. & B.). 



Tunis: drift debris of the Oued Sidi-Aich (Let.). 



Isthmia doumeti LETOURNEUX et BOURGUIGNAT, Prodr. 

 Malac. Tunisie, 1887, p. 110. 



6. TRUNCATELLINA LAEVIUSCULA (Kuester). PL 8, figs. 6. 

 The almost lacking rib-striae are perceptible as fine lines 



only under strong magnification ; it is also usually somewhat 

 slimmer [than " minutissima"] (Kuester). 



Triest, under stones on the grassy slope below the church 

 of Servola (Kuester) ; also east to Serbia and Banat. 



Pupa laeviuscula K., Syst. Conchyl. Cab., p. 101, pi. 14, f. 

 6-8; as a var. of P. minutissima. REINHARDT, Nachrichtsbl. 

 d. M. Ges., vol. 48, 1916, p. 162. Pupa minutissima var. sub- 

 laevigata Pfr., Nomencl. Hel. Viv., 1878, p. 356, substitute for 

 laeviuscula Kiister. 



Dr. Reinhardt found specimens agreeing well with Kiister 's 

 species near the Hercules-bade (on the way to the Domogled 

 and on the right bank of the Czerna) . He gives the following 

 description : 



"Shell cylindric, less obtuse above than cylindrica (not 

 until the 4th whorl as wide as the next), yellowish-brown, 



