Mollusques terrestres et d'eau douce. 159 



ia Svartån prope Skebäck (a,) et in fossa ad Skebäck (/3) (Hartman); prov. 

 Upland: in Fyrisån ad Upsala (Ridderbj. teste Johanson!). /3 ubique rarior. 



PISIDIUM 'CUNEATUM E. A. Bielz. 



Concha inseqnilatera, oblongo-subtrigona, antice conipressa, postice 

 abbreviata, plus minus ventricosa, subtiliter striatula, nitidissima, flavescenti- 

 cornea, parte superiore rufobrunnea; innbones protubérantes, obtusiusculi, 

 natibus convexis; margo dorsalis superne rectus, antice protensus, leviter ar- 

 cuatus, forte declivus, areolis depressis cristietormi elevatus; valvuke interne 

 augulum ad 70" formantes. Long. 3|, alt. 3, cr. 2 mm. 



Pisidimn cuneatuin E. A. Bielz Fauna Moll. Siebcub. (18G7) p. 200 (ex speciin.-orig. 

 ab auctore ipso missis). 



Hab. In Suecia, prov. Skåne: ad Lund hane formam inveni. 



A cette forme appartiennent peut-être quelques-uns des synonymes données 

 sous Pisidium benslowanum ^. 



3. PISIDIUM PULCHELLUM Jen. 



Concha iufequilatera, oblique orbiculari-ovalis, postice abbreviata, 

 ventricosa, profundius et eleganter striata, nitida, lutescenti alba, sed ple- 

 rumque oninino fusco-cinerea, zonisque 1 — 4 obscurioribus; umhones pro- 

 minentes, intlati, natibus Ifevibus convexis; margo dorsalis antice lente ar- 

 cuatus; valvidœ inferne angulum subrectura formantes. Long. 3|, alt. 3, 

 cr. 2 i mm. 



o 



Pisidium jndchellum Jenyns Monogr. Cycl. in Trans. Phil. Soc. Carabi-, IV (18.33) p. 



SOG. t. 21. f. 1—5. Hansen Öfvers. af K. Vet. Akad. Föih. 1848 p. 202. 



Malm Giiteb. Vet., Vitt. Samlus Hanill. III (1855) p, 89 cum fig. Reeve Brit. 



Moll. (1863) p. 233 cum fig. Mörcli Syn. Moll. Dan. (1864) p. 73. AVester- 



luntl Sv. Moll. (1865) p. 125; Coll. Typ. Moll. Su. (18G8) n:o 116. 

 Pisidiwn cazertanum â indühelbun Moquin-Tandon Moll. Fr. II (1855) p. 584. t. 52. 



f. 24—28. 

 Pisidium foutincde var. 2 pidchella JefiVeys Brit. Concli. I (1862) p. 21. 



Hab. In Suecia meridionali hœc species rarior: in prov. Skåne in 

 Rönneå, Trolleberg (J. Lindahl!!) et ad Lund; in prop. Blekinge loco 

 miico ad Ronneby inventa; in ins. Gotland ad Wisby (G. Eisen!!); in prov. 

 Östergötland late destributa et multis locis freqiiens; in prov. Wester- 

 götland ad Göteborg (teste Malm) passim, ex. gr. in Qvillebäcken (forma ge- 

 nuina), in Slottsskogen, Utterbäcks torfniosse et in Mölndals å (f. /3 Jen.: 



