Acta Societatis pro Fauna et Flora Fennica, XllI, n:o 7. 127 



land, Nerike (inter Akerby et Akerbytorj)), Sodermanland, Stock- 

 holm (ad Nacka: G. Eisen), Upland (Upsala: W. J^.). — Now. 

 ad Bergen (fide F'riele). — Dania tota. — Fennia merid. (Aland, 

 Ilelsinge, Sordavala, Saimen etc.). 



Var. clessini W. (Fauna Suec, 1873): t. convexiuscula, medio 

 impressione puiictiforini, subtus plano-convexiuscula, me- 

 dio anguste umbilicata, spira parva OA lat. totius), aiifr. 

 ult. utrinque extus subpequaliter compressus, margine sub- 

 mediano acuto, subtus ab iimbilico extus declivis, apert. 

 elongato-cordata; lat, 7 — 8 mm. — Suecia in Skane, Sma- 

 land (in Lillsjon* ad Jonkoping), Upland (ad Forsmark in 

 Roslagen), Oland (ad Borgholm). — Dania in Bornholm. 



Var. oelandicus W. (Fauna Binnenconch. pal. Reg. V, 1885): t. 

 supra convexa, foveola in medio, subtus subplana, anguste 

 sed profunde umbilicata, spira angustior quam anfractus 

 ultimus, anfr. 472 — ^Ys) sujDeri immersi, perangusti, exte- 

 riores duo celeriter accrescentes, vix convexiusculi, sen- 

 sim extus declives; lat. 0V2 — ^^12 Dim. — Suecia in Oland 

 (Borgliolm in Kungstradgarden *). 



Subfam. Ancylina. 

 T. patelliformis, absque sxnra. 



Gen. Ancylus Geoffr. 



T. depresso-lateqiie conoidea, apice vertlcis scepissime 

 suhmediano^ reflexo. 



1. Ancy/astrum Moq.-Tand. T. sinistraUs, mitrcpfonnis, cor- 

 neo-calcarea, late conoidea, intus nitida, apice paulispcy 

 ad dextrum. 



A. simplex Buc'hoz (Aldr. Loth., 1771). T. ovata, postice distincte 

 angustior, concava, ad Y3 totius longitudinis extra apicem 

 extensa, su})ra antrorsum extense convexa, lateribus con- 

 vexiusculis, subtiliter radiatim striata, apice a margine po- 

 steriore remoto; apertura roUindato-ovata. Long. 5, lat. 4, 

 alt. 272—3 mm. (A. lluviatilis Miill., 1774). 



Hah. Suecia meridionalis et media usque in Dalarne. — 

 Now. ad Kristiania, Sandefjord, Asker in fluvio ad ]]lak.stad, 

 Jicdderen et Moss. — Dania tota sparsim. — Fennia sat fre- 



