QQ TRUNCATELLINA. 



slightly oblique; without teeth. The whitish peristome ex- 

 pands a little and is somewhat thickened within, the termina- 

 tions joined by a thin callus. 



Length 2.13, diam. 0.9 mm. ; 6i/ 2 whorls. France. 



Length 1.95, diam. 0.87 mm. ; 6 whorls. Auxonne. 



Length 1.63, diam. 0.8 mm. ; 5y 2 whorls. Auxonne. 



Length 1.65, diam. 0.80 mm. ; 6 whorls. Auxonne. 



Length 1.75, diam. 0.8 mm. ; 6 whorls. Tyrol. 



Length 1. 85, diam. 0.82 mm. ; 6 whorls. Dorset. 



Europe; North Africa in Morocco and Tunis; Crimea; 

 Asia east to the Caucasus. 



Pupa muscorum, a, DRAP., Hist. Nat. Moll. terr. et fluv. de 

 la France, 1806, p. 59, pi. 3, 1 26, 27, in part. Not of Linne. 

 Vertigo muscorum MOQUIN-TANDON, Hist. Moll. Fr., 1855, 

 p. 399, pi. 28, f. 22, 23. BOURGUIGNAT, Malac. de 1'Algerie, ii, 

 1864, p. 98, pi. 6, f. 28-30 (debris of the Harrach and Ras- 

 sauta near Algiers). Isthmia mnscorum Loc., LETOURNEUX et 

 BOURGUIGNAT, Prodr. Malac. Tunisie, 1887, p. 109 (Algeria: 

 Harrach, Algiers, Bou-Saada, Bone). 



Vertigo cylindrica FERUSSAC, Tabl. Syst., 1821, p. 64. 

 Isthmia cylindrica Fer., REINHARDT, Nachrbl. d. Malak. Ges., 

 vol. 48, 1916, p. 68. 



Pupa minutissima Hartm., of most authors ; PFR., Monogr., 

 ii, 306; iii, 532; iv, 663; vi, 301; viii, 362. KUSTER, Syst. 

 Conch. Cab., p. 100, pi. 14, f. 6-8. MORELET, J. de Conch., 

 xxviii, p. 61 (Tanger, Morocco). HIDALGO, J. de C., xxvi, p. 

 242 (Balearic Is.; apparently includes rivierana). Eoss- 

 MAESSLER, Iconographie, i, pt. 1, p. 84, pi. 2, f. 38. JEFFREYS, 

 British Conchology, i, p. 270. Pupa minutissima var. angus- 

 tata Mouss., KOBELT, Catalog eur. Faunengeb. leb. Binnen- 

 conch., 1871, p. 32 (Epirus; nude name). Pupa (Isthmia) 

 minutissima Hartm., BOETTGER, Jahrb. d. m. Ges., x, 1883, p. 

 183; vi, 406; vii, 139 (Caucasus). Isthmia mmutissima 

 (Hartm.) BOETTGER, Jahrb. Nassau. Ver. Nat., 42, 1889, p. 

 275 (distribution, Pleistocene and Recent). STEENBERG, Dan- 

 mark's Fauna, Landsnegle, 1911, p. 171, f. 141. 



This is the most widely distributed species. Its northern 

 limit has been roughly denned by the localities Skye, Christi- 



