COLUMELLA. 239 



4. Columella columella (Benz). PI. 31, figs. 1, 2, 3. 



Shell small with a very narrow but distinct umbilical per- 

 foration, almost completely cylindric, quite blunt, of 8 very 

 slowly increasing and strongly convex whorls, therefore sep- 

 arated by a deep suture; last whorl is more ventricose than 

 the rest, and somewhat larger in circumference. Aperture is 

 semi-ovate, toothless; peristome straight, simple and sharp. 

 Length V/ s lines, diam. y 2 line; 8 whorls (Rossmaessler). 



Switzerland, the Tyrol and the Tatra range ( Shuttleworth, 

 Gredler and others). Sweden: Quickjock, Lulea Lappland; 

 Bollnas, prov. Helsingford. Norway : Storvik in Waage ( Wes- 

 terlund). Petrograd. Siberia in the Government Jenisejsk, 

 61° to 70° 5', and in the Amur valley. Alaska at Port Clar- 

 ence (Vega Exp.). Pleistocene of Hungary, Germany, the 

 Khone valley and England. Type loc, diluvial near Stutt- 

 gart, between Heslach and Kaltental. 



Pupa columella Benz, Verzeichniss der im Koenigreich 

 Wurtemburg gefundenen Schalthiere, in Corresp. Bl. Wiirt. 

 Landeswirth. Verein, XVII, 1830, p. 49 (not seen by H. P.). 

 Rossmaessler, Iconographie, II, pt. xi, 1842, p. 11, pi. 53, f. 

 731. — Kuester, Conchyl. Cab., Pupa, p. 19, pi. 3, f. 4, 5. — 

 Pfeiffer, Monogr. Viv., Ill, 531. — Wallenberg, Malak. Bl., 

 1858, p. 102, pi. 1, f. 6, 7 (Lappland).— Clessin, Malak. Bl., 

 XX, p. 56, pi. 4, f. 9. — Westerlund, Expose Crit., Nova Acta 

 Reg. Soc. Upsaliensis, (3), VIII, 1873, p. 87; Vega-Expedi- 

 tionens Vetenskaplige Iakttagelser, IV, 1887, pp. 155, 159, 163 

 (Siberia, Alaska). — Pupa (Alcca) columella G. von Martens, 

 Sandberger, Land- und Siisswasser-Conch. Vorwelt, p. 795, 

 pi. 33, f. 34; pi. 36, f. 27. — Sphyradium columella Geyer, 

 Nachrbl. D. M. Ges., vol. 44, 1912, pp. 122-125. — Columella 

 columella (Benz), Kennard, Proc. Malac. Soc. Lond., XVI, 

 1924, p. 93 (Boreal stage of English Pleistocene). 



Pupa inornata Mich., Kuester, Conchyl. Cab., Pupa, p. 115, 

 pi. 15, f. 17, 18 (in one of the highest woods of the northern 

 spur of the Gemmi, on rotten wood). 



Pupa gredleri Clessin, Malak. Bl., XX, 1872, p. 57, pi. 4, 

 f. 8. — Edentulina gredleri Clessin, Moll. Oesterreich-Ungarns 

 u, Schweiz, 1887, p. 263, f. 162. — Pupa (Columella) gredleri 

 Kobelt, Iconographie, (2), VIII, p. 97, pi. 336, f. 1544. Cf. 

 Gredler, Nachrbl. D. M. Ges., XI, 1879, p. 5. 



