Mollusques terrestres et d'eau douce. 141 



Ancyhis ßnviaiilis Müller Verm. Hist. II (1774) p. 201. Nilsson Hist. Moll. Su. (lfe'22) 

 p. 84. Moquin-Tandon Moll. Fr. II (1855) p. 484. Malm Goteb. Vet., Vitt. 

 Samh:s Handl. Ill (1855) p. 151. Nord, et Nyl. Fini. Moll. (185G) p. 75. f. 68. 

 Jeffreys Brit. Conch. I (18(32) p. 120. Reeve Brit. Moll. (1863) p. 171. Morch 

 Syii. Moll. Dan. (1864) p. 55. Westerlund Sv. Moll. (1865) p. Ill; Coll. Typ. 

 Moll. Su. (1868) n:o 102. 



Hab. In Suecia, prov. Skåne: in rivulo ad Fogelsâng prope Lund 

 (Nilsson), in ämne ad Hörby (Malm), ad Smedstorp (E. Hemberg!), ad 

 Mellby (Hultmakk ex Malm), in Rönneå ad Hjelmslund (J. Lindahl!), in 

 lacu Ringsjön et in ämne ad Käflinge (J. A. Wallin!!), in livulo ad Ste- 

 liag frequ. etc.; prov. Blekinge: in lacu Wesan, in amnibus ad Aryd, 

 Mie et Mörrum (Gosselman), in Augerumså (Ankarcrona et ipse); prov. 

 Halland: ad Fröllinge (Nilsson), ad Syllinge par. Weddige (J. Lindahl!); 

 prov. Smaland: ad Jönköping in lacu Vettern (Zetterst. !) ; prov. Wester- 

 götland: ad Göteborg in rivö Utteibäck (Malm), ad Flöda (O. Nordstedt!), 

 iu Munk- vel Kråk-bäckcn ad Warnliem (E. V. Goes!!); prov. Östergöt- 

 land: ad Omberg; prov. Nerike: ad Örebro iu Svartan (Hartman); prov. 

 Dalarne: iu par. Gustaf (F. E. Ridderbjelke teste Johanson!), iu Rörs- 

 liytteåu par. Husby (C. G. Andersson!!). In Norvegia ad Christiania in 

 rivulo a lacu Östensöen fluente copiosissime, nec non in fluvio ad Åker in- 

 venit clar. O.S.Jensen; in fluvio ad Frogner cepit celeberr. C. M. Poulsen. 



Gen. ACROLOXUS Beck. 



(VELLEÏIA Gray). 



Testa dextralis, depressa, oblonga, apice laterali ad sinistrum. Onf. 

 org. int. ad dextrum; maxillœ papillis coufertissimis (ex Moq.-Tand.); dentés 

 linguales 14 — 15 iu ser. longit. , 88 — 90 iu ser. transv. (ex Goldf.). 



1 ACROLOXUS LACUSTRIS (Lin.). 



Testa scutiformis, oblonga, mediocriter convexa, tennis, membrana- 

 cea, pallide cornea, fuscescens, apice brevi resupinato et oblique declinato; 

 apertura elougata, ovato-oblonga. Long. 6, lat. 3 mm. 



Patella lanistris Linné Syst. Nat. X (1758) p. 783; Fauna Su. ed. 2 (1761) p. 534. 



Ancijlus lacustris Müller Verm. Hist. II (1774) p. 199. Nilsson Hist. Moll. Su. (1822) 

 p. 83. Moquin-Tandon Moll. Fr. II (1855) p. 488. t. 36. f. 50—55. :Malm 

 Goteb. Vet., Vitt. Samh:s Haiull. Ill (1855) p. 150. Nord, et Nyl. Fini. :Mü11. 



