HELLICELLA 181 



Q ^, I Helix {Hynlincp) jmra. Alder : Brown, Illust. Conch. 

 J'^PJ- j Brit., ed. 2, p. 53, pi. xviii*, f. 11 & 12. 



1845. Helix {Hyaliua;) pura, Alder : Brown, Illust. L. <& F.-W. 



Conch. Brit., p. 86, pi. ix, f. 15 & 16. 

 1847. Helix (Helicella) diaphanella, Krynick : Beck, Amtl. Ber. 



24. Versatn. Deutsch. Naturf., p. 122. 



[Teste Morch, Synop. Moll. Danicc, p. 13.] 

 1850. Helix (Hyalina) pura, Alder : Albers, Heliceen, p. 66. 

 1852. Zonitcs purus. Alder : Forbes & Hanley, Brit. Moll, 



iv, p. 37, pi. cxxi, f. 5 & 6. 

 1855, \ Helicella pura. Alder : H. & A. Adams, Genera Moll., 

 Jan. j ii, p. 118. 



1855, \ Zonites {Aplostoma) purus. Alder : Moquin-Tandon, 

 Sept./ Hist. Moll. France, ii, p. 87, pi. ix, f. 22-25. 



1857. Zonites purus. Alder : Gray, Turton's Manual, new ed., 



p. 93, pi. iv, f. 43. 

 1860. Hyalina nitidosa, Fer. : ) Martens in Albers, Heli- 

 1860. Hyalina viridula, Menke. : j ceen, ed. 2, p. 69. 



1862. Zonitcs purus. Alder : Jeffreys, Brit. Conch., i, p. 164; 



V, pi. ix, f. 4. 



1863. Zonites purus. Alder : Reeve, L. & F.-W. Moll. Brit. Is., 



p. 49, figs. 

 1876. Hyalina (Polita) pura. Alder : Clessin, Deutsch. Excur. 



Moll. Fauna, p. 73, f. 30. 

 1888. Hyalinia (Polita) pura. Alder : Westerlund, Fauna 



Paldarct. Region, i, p. 43. 

 1891. Vilrea {Polita) pura, Alder : Smith, Journ. of Conch., vi, 



p. 339. 

 1908. Hyalinia (Polita) pura. Alder : Taylor, Monog. Moll. 



Brit. Is. [iii], p. 81, pi. xv. 



[Germain (Moll. France, ii, p. 67) gives as .synonyms : — - 

 H. pilatica, Bourg. ; //. macralsobia, Bourg. ; 

 H. lenarrosta, Bourg. ; and H. Alderi, Bourg.] 



First recorded as British in 1830, by J. G. Jeffreys, as 

 Helix nitidula, var. p. (See ref. above.) 



British Distribution in Time : Pleistocene to Recent. 



7. Helicella (Retinella) radiatula (Alder). 



Etym. : — Lat. dimin. of radiatus, marked with rays. 



1805. Helix nitidula, var. p [pars] : Draparnaud, Hist. Moll. 

 France, p. 117, pi. viii, f. 21 & 22. 

 [Jeffreys (Brit. Conch., i, p. 310) states that Draparnaud's 

 variety included two examples of this species.] 

 1821 f ^^''•^ (Helicella) vitrina, nobis [n. mid.} : Ferussac, 

 T 'I Tahl. syst. Limagons, Jan. ed., p. 45 (June 



"• ( ed., p. 41). 



[Alder (Trans. Nat. Hist. Soc. Northundj., ii, p. 340) says 

 this is the same as his radiatula.] 



