48 LAURIA. 



or creamy, flattened on the face, with a heavy callous thicken- 

 ing towards and at the inner margin. The short, curved an- 

 gular lamella connects with the outer lip, and is continued 

 inward as a thread about a half whorl long, more or less. A 

 very low, thread-like columellar lamella is weakly developed, 

 but often lacking. 



Length 3.5, diam. 1.8 mm. ; 6y 2 whorls. Tadcaster. 



Length 2.8, diam. 1.7 mm. ; 5y 2 whorls. Tadcaster. 



Length 4.5, diam. 2 mm. ; 7 whorls. Calvados. 



Length 3.2, diam. 1.6 mm. ; 6 whorls. Calvados. 



Europe, especially in coastal countries, east to the Caucasus ; 

 Transcaucasia; Algeria; varieties introduced in the Atlantic 

 islands. 



Turbo cylindraceus DaCosta, Hist. Nat. Testae. Brit., 1778, 

 p. 89. 



Pupa cylindracea Paulucci, Bull. Soc. Malac. Ital., vii, 

 1881, p. 120; viii, 1882, p. 278 (Sardinia) ; with var. misella, 

 p. 279, pi. 8, f. 2. — Westerlund, Fauna, iii, p. 80, with var. 

 montigena and incequalis. 



Charadrobia cylindracea (DaCosta) Boettger, Jahrb. D. m. 

 Ges., xiii, 1886, p. 148 (Transcaucasia, at Helenendorf, Der- 

 bent, Kusary, Schach-Dagh). 



Lauria cylindracea DaC, Kobelt, Iconogr. n. F., viii, p. 72, 

 figs. 1490-3, with var. misella, anconostomu, villa and umbili- 

 cus. — Kennard & Woodward, Proc. Geol. Asso., vol. 28, pt. 3, 

 1917 (Postpliocene, Ireland). 



Pupa umbilicata Drap., Tabl., 1801, p. 58 ; Hist., p. 62, pi. 

 3, f. 39, 40..— Pfeiffer, Monogr., ii, 329 ; iii, 542 ; viii, 370 (see 

 for older references). — Gray in Turton, Manual, 1840, p. 193, 

 with var. edentula, p. 194. — Jeffreys, Brit. Conch., i, p. 246. 

 — Bourguignat, Malac. d'Algerie, ii, 1864, p. 91, pi. 6, f. 8-11, 

 13, 14, with, p. 92, var. subperforata and bidentata. — Wester- 

 lund, Fauna, iii, p. 80. — Mousson, Jahrb. d. m. Ges., i, p. 95 

 (Ued Ksib near Mogador). — Reinhardt, Jahrb., iv, 1877, p. 

 283, immature stage. — Boycott, Proc. Malac. Soc. London, 

 xiv, p. 171. 



Pupa umbilicata var. f blakei Shuttl., v. Martens, Die Hel- 

 iceen, 1860, p. 290, name only (Ireland). 



Bulimus unidentatus Vallot, 1801, according to Wester- 

 lund. 



Pupilla drapernaudii Leach, in Turton, Manual, 1831, p. 

 98; Syn. Moll. Gt. Brit., 1852, p. 91. — Helix bocconiana 



