VALLONIA 135 



1845. Helix {Helicella) lamellnta, Jeffreys : Brown, Illust. L. 

 & F.-W. Conch. Brit., p. 67, pi. vii, f. 21. 



1847. Acanthinula lamellata, Jeff. : Beck, Amtl. Ber. 24. 



Versatnm., Deutsch. Naturf., p. 122. 



1848. Helix seminulum, Rossm. : Pfeiffer, Mon. Helic. 



vivent., i, p. 51, in synon. 

 [Pfeiffer's reference is '" Rossm. viii. f. 533." No such 

 name occurs there. Rcssmassler had figured the 

 shell as " Helix Scarburgensis." Gray, in 1857 

 (Turton's Manual, p. 140), repeats Pfeiffer's error. 

 The only Helix seminulum cited in literature is that of 

 Chiereghini, published by Nardo (Sinon. specie 

 Chiereghini, 1847, col. 85) who refers it doubtfully 

 to Helix crysiallina, Drap. Psetel, however {Cat. 

 Conch.-Samml., ii, 1889, p. 182), makes it synony- 

 mous with Hyalinia hydatina, Rm.] 

 1850. Helix {Patula) lamellata, Jeff. : Albers, Heliceen, p. 64. 

 1852. Helix lamellata, Jeffreys : Forbes & Hakley, Brit. Moll., 



iv, p. 73, pi. cxvii, f. 8 & 9. 

 1855. Discus lamellatus, Jeffr. : H. & A. Adams, Genera Moll., 



ii, p. 117. 

 1857. Helix [Hygromanes) lamellata, Jeffreys : Gray, Turton's 



Manual, new ed., p. 140, pi. v, f. 48. 

 1860. Helix {Acanthinula) lamellata, Jeffreys : Martens, in 

 Albers, Heliceen, ed. 2, p. 101. 



1862. Helix lamellata, Jeffreys : Jeffreys, Brit. Conch., i, 



p. 175; V, pi. X, f. 5. 



1863. Helix lamellata, Jeffreys: Reeve, L. & F.-W. Moll. 



Brit. Is., p. 81, figs. 

 1902. Aulaca {Spermodea) lamellata, Jeffr. : Westerlund, Rod 

 Jugoslav. Akad., cli, p. 90. 



First recorded as British in 1829, by J. Kenyon, as Helix 



scarburgensis. {See ref. above.) 

 British Distribution in Time : Pleistocene to Recent. 



Genus : 2. VALLONIA, Risso. 



Etym. : — Named apparently after the town of Vallon, Ardeche. 

 Type : — Vallonia rosalia, Risso = V. pulchella (Miiller). 

 {Helix, vett. auctt.) 



1826. Vallonia : Risso, Hist. Europ. merid., iv, p. 101. 



1827. Amplexis : Brown, Illust. Conch. Brit., ed. ], pi. xli, 



f. 76 & 77. 

 1831. Zuramia : Leach, in Turton, Manual, p. 64, in synon. 

 1833. Chilostoma [pars] : Fitzinger, Beitr. Landesk. Oesterr., 



iii, p. 98. 

 1837. Circinaria, subg. 16 of Helix [j)ars] : Beck, Index Moll., 



p. 23, 



