111 



impressiuscula; an fr. 4 1 / 2 , celeriter accrescentes, omnes tan- 

 tum in latere testae inferiore visibiles, ubi sutura impresso, 

 anfractus ultimus medio carinatus, utrinque convexiusculus; 

 apertura cordiforrais, perobliqua; diam. 5mm. 



£. äraparnaldi Jeffr. (Linn. Soc. Trans. 1830. p. 386): Taf 4. Fig. 

 testa albida vel fusco-cornea solidula, supra planiuscula, 

 subtus umbilicata, spiraliter confei'tim elevato-lineata; anfr. 

 4 1 / 2 , regulariter et lente accrescentes, ultimus in junioribus 

 teretiusculus, vix dilatatus, demum depressus, angulato-cari- 

 natus; apertura rotundato-subovalis, in junioribus ovali- 

 reniformis; diam. 5 — Omni. 



Hab. in tota Europa, ß. hisp. in plerisque terris vul- 

 gatior, in borealibus rarior. y. lemnisc. in Helvetia, Ba- 

 varia, Suecia. d. einet, in Suecia. s. goth. in Suecia (prov. 

 Westergötland). £. drap. in Scandinavia, Britannia, Gallia, 

 Germania. Terminus borealis ad 62 — 63°. 



13. Planorbis gredleri Bielz. (Gredler Tirols Land- und Ta /k 2 "i|" ig ' 

 Süssw. Moll. II. p. 9.) 



Testa solida, corneo-lutescens vel pallide Cornea, sub- 

 nitidula, saepe sordide ferruginea vel fusca obteeta, supra 

 coneaviuscula, subtus umbilicato-coneava, subtiliter et con- 

 ferte transversim striata, striis spiralibus subtilissimis cla- 

 thrata; anfr. 4 l / 2 > celeriter accrescentes, primi teretes, ultimus 

 depresso-teres, demum subangulatus; apertura sat obliqua, 

 subovalis; peristoma saepius simplex, acutum, interdum 

 intus leviter albo-labiatum; diam. 7 mm. 



Habit at in Tirolia nee non Suecia (inter 64 — 69° lat. 

 bor.), Norwegia & Fennia bor. 



14. Planorbis rossmaessleri Auersw. (Rossm. Iconogr. 

 XVIII. 1859. p. 131.) 



Testa corneo-lutescens, nitidula, saepe sordide ferrugi- 

 nea obteeta, supra coneaviuscula, subtus umbilicato-coneava, 

 subtiliter transversim striata, inconspicue clathrata; anfr. 4, 

 celeriter accrescentes, teretes, non carinati; apertura sub- 



