Acta Societalis pro Fauna et Flora Fennica, XIII, n:o 7. 21 



De molluscis fennicis. 



Wilhelm Lilljeborg in K. Sv. Vet. Ak. Ilandl. 1850 mul- 

 tas observationes graves de molluscis in et ad lacum Ladoga 

 tradidit. 



Alexander Theodor de Middendorff. 



Nat. % 1815 in Liflandia, doctor med , prof. zool. in Kiew, 

 cura academice imp. in S:t Petersburg a, 1840 terras ad promon- 

 torium arcticum visitavit et 1842—1845 Sibiriam borealem inve- 

 stigavit, de quo itinere opus magnum laudatum, ad historiani 

 naturalem terrarum borealium maximi momenti, »E,eise in den 

 aussersten Norden nnd Osten Sibiriens (torai 4, 1848 — 1875) edidit, 

 ab a. 1855 secretarius perpetuus acad. sc. in S:t Petersburg; de- 

 natus 28/j 1894. In opere citato etiam faunam malacologicam Fen- 

 niae multis observationibus illustravit. 



Nils Adolf Erik NordensMold & Anders Edvin Nylander. 



Nordenskiold: nat. ^^/^^ 1832 in Helsingfors Fennise, civ. 

 acad. 1849 et doctor phil. ib. 1857, prof, mineralogise in museo 

 regni in Stockholm 1858, annis 1858—1883 investigator illustris 

 terrarum quam maxime arctic, pluries has terras investigavit, 

 ibidem etiam hiemes transigit, prsecipue celebratus exiDeditioni- 

 bus 1868 usque ad 81° 39 lat. bor., 1870 ad Gronlandiam et 1878 

 — 1879 per fretum Behringense circa Asiam et Europam, scien- 

 tiis maximo lucro. 



Nylander: nat. 1831 in Uleaborg Fenni;c, civ. acad. in Hel- 

 singfors 1848, cand. phys.-matem. 1853, doctor med. 1860, medi- 

 cus urbicus 1861, medicus provincialis in Kuopio 1870, denatus 

 23/, 1890. 



— Finlands Mollusker, Helsingfors 1856, pp. 110 c. 7 tab. 



Mollusca fennica usque ad id tempus cognita in hac opere de- 

 scripta sunt: Limax maximus (cinereus), agrestis, Vitrina pelliicida, Hya- 

 linia (Hx.) hammonis (pura), Conulus (Hx.) fulvus, Zonitoides (Hx.) nitidus 

 Avion ater, mut. drapariiaudi (var. d). fuscus (subfuscus), Pimctum (Hx.) 

 pygmceum, Patula (Hx.) ruderata, Helix liarpa (aculeata), costata. ptdchella, 

 lapicida, hispida, strigella, arhustorum, fruticiim, schrenki. Jiorfensis, Pupa 

 muscorum, edentula, antivertigo, pygmcea, siibstriata. pusilla, Balea perversa, 

 Clausilia laminata, plicatula, hidentata (nigricans), Zua lubrica, Succ. pii- 

 tris, pfeifferi. Carychium (Auricula) minimum, Amphipcplea glutinosa, Lim- 

 ncea stagnalis, v. horealis (var. fi), v. livonica? (var. y), auricularia, ovata, 

 lagotis (vulgaris), v. balfhica, peregra, palustris, v. fuscus, truncatula (mi- 

 nuta), Physa fontinalis, hypnorum,, Plan, corneus, umbilicatus (marginatus), 

 vortex, spirorhis, contortus, alhus, crista v. imhricatus (nautileus), Ancylus 



