100 C. A. Westerhmd, Synopsis Molluscorum Extramarinor. Scandin. 



vulgaris. — Noi^v. tota usque ad 70° lat. bor. — Daiiia et 

 Fennia ubique. 



Var. intermcdia Mich. (Compl., 1831): t. elongato-fusiforniis, 

 tenuis at firma, corneo-flavescens, spira elongata, sat gra- 

 cilis, acuta, anfr, convexi, ultimus infra sensim attenuatus 

 sutura antice obliqua, apert. oblongo-ovata, marg. exter. 

 leviter curvato, columella curvatula, reflexa, adpressa; long. 

 20, lat. 10—12, ap. Ig. 13 mm. — Suecia in Upland (V. L.). 

 -— Dania ad Besserup (Steenbuch). 



Var. surcula mh.: t. rimata, elongatoovata, fusco-cornea, nitida, 

 firma, dense striata, spira elongata, late conica, obtusi- 

 uscvila, anfr. tres ultimi fortissime accrescentes, convexi, pe- 

 nultinaus magnus, ventrosulus, ultimus ventricosus, infra 

 sat celeriter et breve attenuatus, rotundatus, sutura descen- 

 dens, apertura oblongo-ovata, superne obtusa, margine ex- 

 teriore ab insertione leviter arcuato, basali rotundato, co- 

 lumellari superne dilatato et reflexo; long. 17 — 25, lat. 11 

 — 14, ap. long. 10—15, lat. 8—11 mm. — Suecia in Jemt- 

 land (ad Kall: E. N.). — Fennia ad Mjatusova prope flu- 

 men Svir et ad Seurujarvi (Mus. Helsingf.). 



Var. fontinalis Stud. ap. Charp. (Cat. Suisse, 1837), forma fen- 

 nica mh.: t. elongato-ovata, tenuis, cornea, spira producta, 

 basi lata, anfr. convexiusculis, superioribus tribus minutis, 

 ultimo a sutuva convexo, basi sensim longeque attenuato, 

 apert. ovata, basi late rotundata, marginibus sat curvatis, 

 columella acuta; long. 24—25, lat. 14—15, ap. Ig. 19, lat, 

 11 — 13 mm. — Fennia in Kuopio in sinu Pitkalaks et ad 

 Levais * et Kallavesi: Mus. Helsingf.). Forma typica (in 

 Helvetia et Bavaria) suturam antice obliquarn et anfractus 

 sursum depresso-attenuatos habet, talem apud nos non vidi. 



Var. viUgaris C. Pfr. (Naturgesch., 1828): t. minor, conico- 

 ovata, tenera, argute striata, pallide v, rufo-cornea, spira 

 brevis, acuminato-conica, anfr. ultimus medio sat conve- 

 xus, sursum attenuatus, apert basi rotundata, superne an- 

 gustata, columella paullo curvata, margine exteriore leviter 

 arcuato; long. 10—15, lat. 8—10, ap. Ig. 7—10 mm. — Pas- 

 sim. 



Var. sericina C G. W. ap. W. (Fauna Binnenconch. Suppl., 

 1890): t. ovata, pertenuis et fragilis, sericina, densissime 

 striatula, et plicatulo-striata, flavidobrunnea, spira perbre- 

 vis, anfr. ultimus superne et medio perconvexus, infra at- 

 tenuatus, apert. infra longe producta, margine exteriore 

 forte arcuato, columella curvata; long, 12—14, lat. 9—10, 



