Mollusques terrestres et d'eau douce. 27 



Hah. Ill Suecia lisec species prœsertira per reg-iones sylvaticas 

 Lappoiiise frequenter occurrit, in quibus etiara maxime perfecta; desceuclens 

 tarnen per provincias omnes in prov. Skåne usque. Circa Qvickjock Lap- 

 pouiai Lulensis (G7— GS") frequens, ad Jockmock parcius (Wallenberg); 

 prov. Härjedalen: a montibus Glissjoberg et Funnäsdalsberg raisit dar. 

 F. Söderlund; prov. Helsingland: ad Bollnäs (Söderl.!!); prov. Dalarne: 

 in Ossmnndsberget par. Rättvik, ad Sätlier et pluribus locis frequens (C. G. 

 Andersson!!); in prov. West m anländ vulgaris (teste celeb. C. H. Johan- 

 son!); ad Stockbolm: in Stora Angsvikcn ins. Wermdön (C. Hartman); 

 prov. Ne rike: multis locis circa Örebro, in Herrfallsängarne par. Hallsberg, 

 ad Kibls källa et Willingkullen par. Knista (C. Hartm,); prov. Östergöt- 

 land: in declivitatibus montis Omberg, prfcsertim ad Alvastra et Borghaniii 

 (C. A. W.); prov. Westcrgötland: in montibus Mösseberg (C. A. W.) et Bil- 

 lingen (C. A. Andersson!!), ad Gunnebo, Slottskogen et Utterbäck prope 

 Göteborg (Malm); prov. Småland: in jurisdictione Tveta pluribus locis fre- 

 quens (E. Hemberg!!); prov. Skåne: ad Bclteberga (C. A. W.). In Nor- 

 vegia: in Eidswold ad partem meridionalcm lacus Mjöscn (v. Martens), in 

 insula Manger pr. Bergen (prof Sars teste v. Mart.), ad Sagatun prope 

 Hamar, in Ladugaardsöen prope Christiania et iu par. Hof (O. S. Jensen!!). 

 Certe per totum regnum distributa. 



Dans sa British Concliology, I. p. 1(39, eu Zonites excavata Bean, dit J. 

 GwYN Jeffkeys: "Tliis species has been considered peculiar to Great Britain, and to 

 be the only land-shell which does not inhabit any other part of the world; but I 

 have reason to believe that the greenish-white variety is the Helix vh-idula of FÉ- 

 KUSSAC, as well as the H. virklula of Mexke, H. petronella of Charpentier, and 

 probably also the H. clara of Held. In the 'Malakozoologische Blätter' for 1858 

 will be found a critical dissertation by von Walleniîekg on the Helix viridula of 

 Mexke compared with Z. j^ut-us, in which the autor showed that these were quite 

 different species; and I can answer for the identity of Z. excavatus var. vitrina (or 

 viridula) with the H. petronella of Charpentier, having found specimens of the 

 latter on the Corner glacier in Switzerland at a height of about 7000 feet above the 

 sea-level, and afterwards compared them with the types in Charpeutier's collection at 

 Devens while I was on a visit to that eminent naturalist. In a letter which is now 

 before me from the late M. Charpentier, dated 28"' August, 1854, he says the //. 

 vHri)ia of FÉRLSSAC, is identical with his own H. petronella, and that it is very dif- 

 ferent from H. radiatiila, with which it has only a slight relation iu respect of the 

 strire. Férussac did not give any description of his species." Ayant comparé plu- 

 sieurs exemplaires de Z. excavata d'Angleterre, qui Mr Jeffreys a eu la bonté de 

 me donner, à plus de cents exemplaires de Z. petronella de Scandinavie, je suis 

 d'avis que ces deux coquilles sont bien différentes espèces. Z. excavata se distingue: 

 umbilico niulto latiore, anfractibus pluribus et niulto tardioribus, ultimo angustiore et 

 magis cylindraceo, apertura magis rotundata, colore corneo-brunneo, striis testai suli- 

 tilioribus etc. 



