272 CLAUSILIID^ 



1856. Clausilia {Iphigciia) 'perversa, Miill. : Moquin-Tandon, 



Hist. Moll. France, ii, p. 332, pi. xxiv, f. 21-27. 



1857. Clausilia {Iphigenia) nigricans, Maton & Rackett : 



Gray, Turton's Manual, new ed., p. 186, 

 pi. V, f. 58 & 59. 

 1860. Clausilia {Iphiqcuia) rugosa, Dr. : Martens, Albers, 

 Heiiceen, ed. 2, p. 283. 



1862. Clausilia rugosa, Draparnaud : Jeffreys, Brit. Conch., 



i, p. 278 ; V, pi. xvii, f . 2 a-c. 



1863. Clausilia perversa, Miiller : Reeve, L. & F.-W. Moll. 



Brit. Is., p. 103, figs. 

 1877. Clausilia {Pyrostoma) nigricans, Pulteuey : Clessin, 



Deutsch. Excur. Moll. Fauna, p. 264, f. 145. 

 1881. Clausilia (Pirostoma) bidentata, Strom: Kobelt, Cat. 



Europ. Binnenconch., ed. 2, p. 106. 

 1881. Cluusilia {Pirostoma) bidentata, var. rugosa, Drap. : 



Kobelt, I. c. 

 1884,) Clausilia (Kuzmicia) bidentata, Strom : Westerlund, 

 May./ Fauna Paldarct. Region, iv, p. 187. 



1884,) Clausilia (Kuzmicia) rugosa, Drp. : Westerlund, t. c, 

 May./ p. 188. 



1884. Clausilia (Pyrostoma) bidentata, Strom : Clessin, 



Deutsch. Excur. Moll. Fauna, ed. 2, p. 306, 



f. 172. 

 1904. Clausilia (Cusmicia) bidentata, Strom : Kobelt, Ross- 



massler, Icon., N.F. xi, p. 234. 

 1904. Clausilia (Cusmicia) rugosa, Drap. : Kobelt, I. c. 



[Germain (Moll. France, ii, p. 203) gives as synonyms :— 



CI. velaviana, Bourg. ; CI. lamaloiwnsis, Bourg. ; 



CI. pleurasthena, Bourg. ; CI. arrosia, Bourg. ; and 



CI. nantuacina, Bourg. 

 According to Westerlund, the Balia Sarsi, Bourg., is 



the young of this species.] 

 First recorded as British in 1674, by M. Lister (Phil. 



Trans., ix, p. 99, pi. ii, f. 10). 

 British Distribution in Time : Cromerian to Recent. 



2. Clausilia dubia, Draparnaud. 



Etym. : — Lat. dubius, doubtful. 



[This species has generally been confused with CI. rugosa, 

 Drap.] 



1805. Clausilia dubia : Draparnaud, Hist. Moll. France, p. 70, 



pi. iv, f. 10. 

 1820. Clausilia roseida, niihi : '] Studer, Natunv. Anz. 



1820. Clausilia cruciata, mihi : \ Schweiz. GeselL, iii, p. 89. 



(In reprint, " Syst. Verzeichn.," p. 20.) 



1821. Helix (Cochlodina) dubia, Drap. : ) Ferussac, Tabl. 

 1821. Helix (Cochlodina) cruciata, Venetz : / syst. Lima^ons, 



Jan. ed., p. 67 (June ed., p. 63). 



