SPH^RIUM 307 



1857. Cyrlas lacustris, Mont. : Gray, in Turton's Manual, 



new ed., p. 257, pi. 1, f. 3. 

 1862. Sphcerium lacustre, Miillcr : Jeffreys, Brit. Conch., i, 



p. 10; V, pi. i, f. 4. 

 18G3. Ci/clas lacustris, Muller : Reeve, L. c6 F.-W. Moll. 



Brit, /s., p. 241, figs. 



1872. Calyculina calyculalum, Drap. : Clessin, Malak. Bldtt., 



xix, p. 159. 



1873. Calyculina lacustris (Miill.) : Cle.ssin, in Wcsterlund, 



Fauna Moll. Svecice, pt. ii, p. 517. 



1873. Calyculina ryckholtii, Norniand : Clessin, o. c, p. 522. 



1877. Calyculina lacustris, Miiller : Clessin, Deutsch. Excur. 

 Moll. Fauna, p. 492, f. 318. 



1877. Calyculina Rykoltii [sic], Norniand : Clessin, o. c, 

 p. '496, f. 321. 



1877. Calyculina Creplini, Dunker : Clessin, o. c, p. 498, 

 f. 324. 



1890. Sphcerium {Calyculina) lacustre, Miill. : Westerlund , 

 Fauna Paldarct. Region, vii, p. 14. 



1890. Spha'riuin {Calyculina) hrochonianum, Bgt. : Wester- 

 lund, /. c, p. 15. 



1890. Sphwrium {Calyculina) tcrvcrianum, Dup. : Wester- 

 lund, t. c, p. 16. 



1890. Sphcerium {Calyculina) creplini, Dunker : Westerlund, 

 t. c, p. 16. 



1890. Sphcerium {Calyculina) ryckholti, Norniand : Wester- 

 lund, t. c, p. 17. 



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



Trans., ix, p. 99, pi. ii, f. 26). 

 British Distribution in Time : Pleistocene to Recent. 



7. Sphaerium pallidum, Gray. 

 Ktyni. : — Lat. pallidus, pale. 



(Formerly confused with S. lacustre (Miiller), or S. ovale 

 (Ferussac).) 



1856. Sphcerium jxilliclum : Gray, Ann. ct Mag. Nat. Hist., 



Ser. II, vol. xvii, p. 466, fig. 



1857. Cijclus pallida : Gray, in Turton's Manual, new ed., 



p. 254, fig. 



1862. Sphcerium ovale, Ferussac : Jeffreys, Brit. Conch., i, 



p. 8; V, pi. i, f. 3. 



1863. Cyclas ovalis, Ferussac : Reeve, L. <& F.-W. Moll. Brit. 



Is., p. 240, figs. 

 1890. Sphcerium {Cyclas) pallidum. Gray : Westerlund, 

 Fauna Paliiarct. Region, vii, p. 12. 

 First recorded as British in 1856, by J. E. Gray. {See 



ref. above.) 

 British Distribution in Time : Recent 



