Acta Societatis pro Fauna et Flora Fennica, Xlll, n:o 7. 137 



spiraliter lineata, calcarea (viva viridula), spira alta, acu- 

 minato-conica, quam apert. sai'pius multo longior; anfr. 

 5, lente regulariter accrescentes, subteretes, ultimus ssepe 

 solutus; sutura impressa; apert. rotundata. Alt. 5 — 6, lat. 

 4 — 4^2 n^Ti- 



Hal). Siiecia in maxime orientali parte prov. Skane (Ra- 



belof, Olsjo, Krageholm, Lyngby et Lefrasjon), in Ostergotland 



(copiose in lacu Takern) et Upland. In lacubus Lefrasion et 



Takern viva inventa. — Dania in plerisque lacubus majoribus. 



=^V. pusilla Mull. (Verm. Hist. II, 1774, Nerita). T. umbilico 



perspectivo cylindrico, globosa v. pomacea, corneo-subvi- 



ridis, striis incrementi obsoletis, spira sat elevata, apice 



planiusculo; anfr. 4. Lat. 3^2 mra. »Neritinam piscinalem 



valde refert, at multo minor (diam. 1 lin.) et tamen an- 



fractuum quattuor est» (Miill.) »Htec forma quam maxime 



V. antiqucie similis, sed differt in speciminibus ajque mag- 



nis umbilico cylindrico perspectivo» (Morch). 



Hab. Siiecia in Ostergotland (in lacu Takern), ad Stenborg 



prope Gefle et ad Jorn in Westerbotten. — Dania in Sjtelland 



(Damhuussoen et in pluris locis, fide Morch, qui huc refert V. 



piscinalem Nord. & Nyl. (Finl. MoII. t. IV f. 56). — Fe^inia 



(Borga, Taipalsaari et Paanajarvi in Kuusamo). Hfec forma mihi 



nondum clara est. 



V. lilljeborgi n. sp. T. rimato-perforata, subovata, dense striata; 

 anfr. 4 — 4^2 convexi, cylindracei, non gradati, sutura pa- 

 rum profunda, penultimus antepenultimo plus quam duplo 

 altior, ultimo non ventroso, nec dilatato, parum prasva- 

 lente Y^ humilior; spira ovato-conoidea, obtusa, infra lati- 

 tudine altitudini subtequalis; apert. subcircularis parum 

 obliqua, peristomate sub medium anfr. penultimi longe 

 abbreviato v. callo affixo tenui conjuncto. Alt. 4 — 5, lat. 

 4 mm. 



Hab. Suecia in fluvio Fyrisan ad Upsala (W. L.). 

 V. piscinalis Miill. (Verm. Hist. II, 1774). T. anguste, ssepius 

 paullo obtecte umbilicata, oblique globoso-turbinata, stria- 

 tula, fuscocornea, rufa v. virescens, spira altitudine aper- 



