232 COLUMELLA. 



Page 105. Negulus raricosta (Slavik). The spelling 

 "raricostatus," of Wenz, Foss. Catal., iii, 1923, p. 1024, is an 

 error or emendation. Slavik 's name was Pupa (Pupilla) rari- 

 costa on pp. 266, 272, and on the plate of his work. 



Genus COLUMELLA Westerlund. 



Sphyradmm (Agass.) Charpentier, Westerlund, Fauna 

 Palaarctischien Region Binnenconchylien, III, 1887, p. 125. — 

 Sterki, Nautilus, X, 1896, p. 75. — Hanna, Proc. U. S. Nat. 

 Mus., vol. 41, p. 371 (monograph, anatomy) ; and of most re- 

 cent American and European authors. Not Sphyradium as 

 limited by von Martens, 1860. 



Paludimlla Lowe, P. Z. S. 1854, p. 206, type P. edentula 

 Drap. Not Paludmella Pf eiffer, 1851. — PaludelUna Tryon, 

 Struct, and Syst. Conch., Ill, 1884, p. 72, error for Paludi- 

 nella. 



Edentulina Clessin, Deutsche Excursions-Mollusken-Fauna, 

 1876, p. 208, for Pupa inornata =a P. edentula Drap. Not 

 'Edentulina Pf eiffer, 1855 (Streptaxidte) . 



Columella "Westerlund, Fauna Europsea Moll. Extramar. 

 Prodromus, fasc. II, p. 193, 1878, type Pupa "inornata Mich." 

 = edentula Drap. — Pilsbry, Nautilus, XXVI, 1912, p. 60. 

 — H. Watson, Proc. Malac. Soc. Lond., XV, 1923, p. 275 

 (anatomy). 



The shell is cylindric or cylindric-tapering with obtusely 

 conic summit and distinctly perforate axis, brown and nearly 

 smooth, composed of 5 to 9 convex whorls. Aperture sub- 

 basal, semicircular, oblique; peristome thin and sharp, the 

 outer lip not expanded, regularly arcuate ; columellar margin 

 dilated. 



The foot is short, oval, without pedal grooves, above with a 

 coarse-meshed network of impressed lines. There are no lower 

 tentacles. 



Kidney in form of a long slender pouch, the glandular 

 matter evenly distributed over the inner surface, not arranged 

 in longitudinal ridges as in Pupillidas. Ureter direct, opening 

 into the anterior end of the pallial cavity. 



Genitalia about as in Vertigo, but the penis is smaller and 

 without glandular tissue. Atrium very short. The penis is 

 small, slender anteriorly, bearing the vas deferens and re- 



