42 C.-A. Westeklund, 



4. HELIX ARIJÜSTORÜM Lin. 



Testa obtccte perforata, globulosa, spiraliter niimitissime striata, ni- 

 tida, fusca, iinifasciata, maculis stramineis aspersa; peristoma candide labia- 

 tum. Diam. 18 — 23, alt. 17 — 22 mm. 



Helir. arhustorum Linné Syst. Nat. X (1768) p. 771; Fauna Su. ed. 2. (1761) p. 529; 

 Syst. Nat. XII (1767) p. 124.5. Müller Verm. Hist. II (1774) p. 5.5. Nilsson 

 Hist. Moll. Su. (1822) p. 18. RossmSssler Ironofjr. I (1835) p. 56. f. 4; V 

 (18.37) p. 5. f. 297 a— e. Pfeiffer Monogr. Helic. I (1848) p. 339. Friele 

 Korske Moll. (1853) p. 8. Moq.-Tai.don Moll. Fr. II (1855) p. 123. t. XI. f. 

 1—4. Nord, et Nyl. Fini. Moll. (1856) p. 16. f. 18. Jeffreys Brit. Conch. I 

 (1862) p. 188. Westerlund Sv. Moll. (1865) p. 55. 



Arianta arhwtorutn Mörcli Syn. Moll. Dan. (1864) p. 22. 



Arionta arbustorum Westerl. Coll. Typ. Moll. Su. (1868) N:o 41. 



1. morbosa albina Ros.sm. Icon. I. p. ,57: testa pallida lutea vel flavo- 

 albina, fascia obsoleta seu nulla, colore griseo-flavescente sub epi- 

 denuide tincta. (HÖGBERG in K. Vet. Akad. Handl. 1841. p. 198). 



ß. alpicola FÉR. : testa flavida, diam. 1."}— 14, alt. 11 — 12 mm. 



y. calcarea Högberg: testa calcarea, crassa, solida, colore obscure ca- 

 stanea, maculis luteis, intus obscure purpurea; diara. 22 — 24 — 25, 

 alt. 16 — 18 — 21 mm. (Criticola, ponderosa, gigantea; diam. 27 mm.: 

 MÖRCH L c). 



å. depress» Scholz: testa magna, depressa, tenuis, perforata, colore 

 forinœ typicae; diam. 25 mm., alt. 18 mm. 



f. COlioidea mh.: testa maxinia, conica, subperforata, irregulariter sub- 

 costulata, unifa.sciata, maculis pallide luteis ad linens transversales 

 densas cootiuentibus; anfr. 6j, ultimus pone aperturam extus fascia 

 lata, pallide lutea; diam. 2.'}— 24, alt. 25—26 mm. 



C. picea Ziegler: testa tenuissima, transparens, castanea, unicolor, 

 unifiisciata. 



Hab. In Suecia bœc testa passim frequens in provineiis plerisqiie 

 (in alüs, ex. gr. circa Stockholm, prorsus desideratur) ab intima parte 

 prov. Skåne saltern ad G 7 — GS" lat. bor. usque, ubi cam celeb, v. Wallen- 

 berg et BOHEMAN ad Qvickjock Lapponise Lule nsis, sub forma alpicola, 

 invenerunt, magnitudiue et pictura formaî alpinse, qualis in alpibus Helvetise 

 reperitur, respondentem , sed tinciura fulva in spec. lapp. minus prsevalente. 

 In alpibus La))poniic fere ad termiiium nivalem (ixbi nix perpétua majorem 

 partem terras tegit) ascendit et vulgatior est supra reg-ionein betuiinam, quam 

 in vallis infrajacentibus, sicut etiam in terris humilioribus a Qvickjock ad 

 Luleå desideratur. 1. morb. alb. in truncis arboruni, sub la})idibus calcareis 

 et in plantis (prsesertim liumulo lupulo) ad diversoriiim Stucks in Bunge, 



